Episodes 01

“It’s About Time”

When hulking villainous scientists, the Mauler Twins, attack the White House, they are repelled by the Guardians of the Globe and Nolan Grayson / Omni-Man. Nolan’s son Mark, who is waiting for his powers to emerge, goes to school and defends classmate Amber Bennett from bully Todd. After Todd punches Mark to the ground, Amber saves the latter and develops an interest in him. Later, Mark’s superpowers emerge, and he finishes work to tell his parents at dinner. While Nolan is initially uncertain, he still begins to train Mark on how to use them. However, wishing to emphasize the severity of being a superhero, Mark is caught off-guard by his father punching too hard. Feeling hurt emotionally and physically, Mark blows off steam by stopping a robbery in a homemade suit. After a heart-to-heart with his son, Nolan takes Mark to meet superhero suit tailor, Art Rosenbaum, who creates a proper superhero suit for Mark after he chooses to call himself “Invincible”. Later, Nolan secretly ambushes the Guardians at their headquarters and kills them all before falling unconscious from damage sustained from their resistance.

Episodes 02

“Here Goes Nothing”

The clandestine Global Defense Agency nurses a comatose Nolan in their secret hospital underneath The Pentagon, but fails to revive the Guardians, so Director Cecil Stedman informs Mark and his mother, Debbie. As extra-dimensional aliens called the Flaxans attack, Mark helps the Teen Team hold off their forces. When the Flaxans rapidly age and retreat, Teen Team leader Robot deduces this was due to a time dilation difference between the Flaxans’ homeworld and Earth. As Mark recognizes Atom Eve as classmate Samantha Eve Wilkins, they share their identities and become friends. The Flaxans return with anti-aging technology, but Mark and the Teen Team destroy them, forcing another retreat. The Flaxans return once again and nearly succeed until a recuperated Nolan forces them back to their homeworld, where he devastates their planet in retaliation before returning as news breaks of the Guardians’ deaths. Meanwhile, Mark skirmishes with Allen the Alien, who wants to test Earth’s defenses for the Coalition of Planets. Calling a time-out to talk and learning of Allen’s mission, Mark corrects his mistaking “Earth” for another planet, “Urath”. Allen leaves, bidding a friendly farewell. Concurrently, demon detective Damien Darkblood investigates the deaths of the Guardians for Cecil, theorizing the killer was among the heroes.

Episodes 03

“Who You Calling Ugly?”

After a televised funeral, the Graysons attend the Guardians’ private burial with their loved ones, where Darkblood questions Nolan privately and hints at his suspicions. Cecil commissions Robot to form a new Guardians roster of his choosing, given his handling of the Flaxan invasions, so Robot merges the Teen Team with other heroes Monster Girl, Black Samson, and Shrinking Rae. However, Eve immediately quits, still resentful of her teammate and boyfriend Rex Splode after catching him cheating with teammate Dupli-Kate. When Mark gets Amber’s number, he sets up a “study date”, which gets interrupted when he helps Eve stop Doc Seismic from attacking Mount Rushmore. Despite waiting, Amber still stays for their date out of intrigue. When Rex tries apologizing to Eve, she refuses to accept and seeks out Mark, only to discover him with Amber and leaves unnoticed. With Robot’s unseen help, the Maulers escape from their GDA prison, though one sacrifices the other. When Darkblood questions Debbie, he finds Nolan shared little with her. This encounter leaves her suspicious of Nolan, who senses Darkblood’s lingering presence.

Episodes 04

“Neil Armstrong, Eat Your Heart Out”

Angry that the GDA has not caught the Guardians’ killer yet, Red Rush’s widow, Olga, commissions Debbie to sell her house so she can return to Moscow. Cecil asks Nolan to protect the first mission to Mars, but the latter refuses, citing his responsibilities protecting Earth, so Mark volunteers. Despite a successful landing, Mark’s inattentiveness allows Martians to abduct the astronauts. The Martian Emperor orders their execution to prevent the parasitic Sequids from reaching Earth and destroying the universe. Mark hastily evacuates the astronauts to their shuttle, failing to realize a Martian had replaced one of them. Meanwhile, as Nolan and Debbie vacation in Rome to rekindle their relationship, he manipulatively regains her trust with half-truths. Cecil realizes Nolan is the killer, but cannot act until he determines the latter’s motive and a way to stop him. Knowing he will not drop the case, Cecil exiles Darkblood to Hell, unaware that the detective hid his notepad in Debbie’s closet. As the surviving Mauler begins cloning himself, Robot monitors his progress and methods before stealing a DNA sample from Rex to present to his real self, the deformed Rudy Connors.

Episodes 05

“That Actually Hurt”

After Debbie finds Darkblood’s notepad, her lingering suspicions return, and she locates Nolan’s bloodied super-suit while he is away. After Black Samson lectures his teammates on failing to protect civilians due to their infighting, Robot secretly approaches the restored Mauler Twins with a job offer. Meanwhile, Mark promises to help Amber at a soup kitchen she volunteers at as recompense since he neglected her while working as Invincible. However, he must also help superpowered enforcer Titan defeat his boss, Machine Head, who predicted their attack and hired multiple villains for security. The Guardians arrive to help, but Mark, Monster Girl, and Black Samson are beaten and severely wounded by Battle Beast, which prompts the rest of the Guardians to act as a team. Seeing the other villains swiftly defeated, Battle Beast abandons the battle due to its ignominy. The GDA arrest Machine Head and medevac Mark and the others, allowing Titan to take over Machine Head’s operation. Eve also volunteers alongside Amber, needing direction after quitting being a superhero, but leaves when Cecil calls her about Mark’s hospitalization. Elsewhere, GDA scientists test samples of Mark’s blood, discovering the cells are invulnerable to every lethal test they run.

Episodes 06

“You Look Kinda Dead”

Humbled by his week-long recovery, Mark reconciles with Amber before both accompany his best friend, William, on a weekend visit to Upstate University to see his crush, Rick Sheridan. However, a cyborg experiment of mad scientist, D.A. Sinclair’s, escapes confinement and fights Mark before killing himself. As William deduces Mark’s identity, Amber breaks up with Mark due to his “absence” during the cyborg’s rampage, and he sacrifices reconciliation to rescue William and Rick from Sinclair. Seeing Rick converted into a cyborg, William’s pleas for help enable Rick to overcome his alteration and help Mark defeat Sinclair. Following Sinclair’s arrest, Cecil takes an interest in his technology, which overwhelmed Mark’s physiology. Meanwhile, Rosenbaum examines Nolan’s bloodied suit for Debbie, confirming Nolan killed the Guardians. Both fearfully agree to stay silent, but the revelation sends Debbie into a drunken depression. Having studied her biology beforehand, Robot gathers magical ingredients to heal Monster Girl. While the Maulers continue to grow a body for Robot, they also exhume the Immortal’s corpse in order to resurrect him as their enthralled weapon against Robot. Concurrently, Eve is inspired by Amber to skip college and use her powers in direct humanitarian endeavors.

Episodes 07

“We Need to Talk”

After Debbie relocates to the GDA, Cecil explains the truth before both witness Nolan kill Cecil’s associate, Donald Ferguson, and several GDA agents. Adding a neural link upgrade, the “Rudy” clone reluctantly euthanizes his progenitor. Paying and betraying the Maulers, the new Rudy leaves for a Guardians summons. He explains himself to the team, who are taken aback by Rudy’s revelations before learning the truth about Omni-Man and their predecessors’ fates. Cecil buys time by talking to Nolan before retreating to deploy Sinclair’s “Reanimen” and a modified Kaiju to kill him. Unfazed by Mark revealing his superhero identity, having deduced the truth weeks earlier, Amber dumps him as he never trusted her before. Mark seeks Eve’s wisdom, but she criticizes his selfish behavior. When the two intercept Nolan’s fight with the Kaiju, Cecil orders Eve to leave Mark and rendezvous with the Guardians. When the Maulers revive Immortal, he flies off to battle Omni-Man in an attempt to avenge the death of his team, while Mark narrowly subdues the Kaiju. News choppers capture Omni-Man killing Immortal in a live global broadcast, before Nolan finally asks to talk with a bewildered Mark.

Episodes 08

“Where I Really Come From”

After revealing himself as an infiltrator for the Viltrum Empire sent to conquer Earth, Nolan fails to convince Mark to join him and overpowers his son, devastating Chicago and killing thousands. Despite being beaten nearly to death, Mark causes Nolan to remember his love for his family. Unable to reconcile this with his duty, Nolan tearfully abandons Earth. The Guardians and Eve mobilize to aid Chicago relief efforts as the world learns of Omni-Man’s betrayal while Cecil helps Debbie and Mark by falsifying Nolan’s civilian death. A devastated Debbie shares a drink with Rosenbaum, also hurt by Nolan’s betrayal, as Mark and Amber rekindle their relationship after his two-week recovery. As Amber and William learn Eve is also a superhero, Cecil sends Mark to intercept an approaching Allen and updates him on recent events. Allen warns Mark that a Viltrumite fleet will come for Earth, given Nolan’s uncharacteristic abandoning of his post, but he thinks that Mark can help the Coalition stop the Viltrumites’ expansion. As Mark plans to finish high school, the Maulers are arrested while Immortal recuperates under GDA protection. Villainous forces conspire to return as Cecil commissions Sinclair to mass-produce Reanimen contingency troops.