Taking inspiration from the comic books of the same name, each episode of this animated anthology series questions, revisits and twists classic Marvel Cinematic moments.

Season 1

E01What If… Captain Carter Were The First Avenger? 36m When Steve Rogers is seriously injured, Peggy Carter becomes the world’s first Super Soldier. E02What If… T’Challa Became a Star-Lord? 37m The rough-and-tumble space pirates known as the Ravagers abduct T’Challa instead of Peter Quill. E03What If… The World Lost Its Mightiest Heroes? 35m Nick Fury struggles to launch The Avengers when candidates are targeted by a serial killer. E04What If… Doctor Strange Lost His Heart Instead of His Hands? 38m A grief-stricken Doctor Strange uses the Eye of Agamotto in a dangerous effort to change the past. E05What If… Zombies?! 34m When The Avengers are infected by a zombie plague, surviving heroes search for a cure. E06What If… Killmonger Rescued Tony Stark? 36m An American soldier called Killmonger rescues Tony Stark when his Humvee is attacked in Afghanistan. E07What If… Thor Were an Only Child? 38m Thor, who never learned to be a good hero, throws an out-of-control intergalactic party on Earth. E08What If… Ultron Won? 32m Natasha Romanoff and Clint Barton seek to destroy killer-robot Ultron following a cataclysmic event. E09What If… The Watcher Broke His Oath? 37m The Watcher breaks his oath and recruits heroes from across the multiverse to battle against Ultron.

Season 2

E01What if… Nebula Joined the Nova Corps? 31m When Nebula is recruited to join the Nova Corps, she sets out to prove her detective skills. E02What if… Peter Quill Attacked Earth’s Mightiest Heroes? 32m When Ego and a young Peter Quill threaten Earth in 1988, Howard Stark and Peggy Carter form a team. E03What if… Happy Hogan Saved Christmas? 29m When Avengers Tower is attacked during the holiday party, Happy Hogan must prove his hero chops. E04What if… Iron Man Crashed Into the Grandmaster? 34m Tony Stark challenges The Grandmaster, leading to a grand prix-turned-demolition-derby death match. E05What if… Captain Carter Fought the Hydra Stomper? 33m Captain Carter's mission to save Steve Rogers sets her on a collision course with new enemies. E06What if… Kahhori Reshaped the World? 34m A Mohawk woman ventures into the waters of the Forbidden Lake to help save her people. E07What if… Hela Found the Ten Rings? 31m Hela—stripped of her powers and banished to Earth—comes across a new source of power: the Ten Rings. E08What if… the Avengers Assembled in 1602? 32m Captain Carter tries to undo the anomaly that strands familiar heroes and villains in the year 1602. E09What if… Strange Supreme Intervened? 33m Captain Carter discovers the greatest threat to all existence may be closer than she realizes.

Season 3

E01What If…The Hulk Fought the Mech Avengers? 31m Captain America/Sam Wilson must suit up in a colossal mech suit to battle Bruce Banner after an attempt to cure himself of the Hulk goes horribly wrong. Bucky Barnes, Monica Rambeau, Moon Knight, and others must join Sam as his new team of Mech Avengers. E02What If…Agatha Went to Hollywood? 30m On the set of Stark Pictures' first production, the playboy auteur quickly finds himself enchanted by his bewitching lead actress, Agatha Harkness. Little does she know there will be another superpower co-star on the call sheet… Kingo. E03What If…The Red Guardian Stopped the Winter Soldier? 33m It is 1991, and the Red Guardian takes it upon himself to join a high-profile mission and prove himself to his Red Room superiors. When his antics interfere with the Winter Soldier's own mission to kill Howard Stark, the two Soviet supersoldiers must form an alliance to escape the United States. E04What If…Howard the Duck Got Hitched? 32m Howard the Duck and Darcy Lewis find themselves on an intergalactic pleasure cruise. When dangerous factions from across the galaxy descend to threaten their trip, they must discover their own cosmic powers to withstand the onslaught. E05What If…The Emergence Destroyed the Earth? 33m In a Universe where The Eternals never stopped The Emergence, the birth of an incubating Celestial shatters the Earth. Civilization endures on the rocky remnants of our planet, where Quentin Beck leads an authoritarian regime until freedom fighters recruit Riri Williams on a deadly mission to take him down. E06What If…1872? 32m In a universe where the heroes of the MCU live in the Old West, Shang-Chi and his pistol-packing partner, Kate Bishop, traverse the frontier, saving the innocent from the evils of The Hood. E07What If…The Watcher Disappeared? 28m The Watcher must stand trial for his many interventions. E08What If…What If? 34m The end of the beginning...