The Superhero Squad gets a distress call from another city when their Helicarrier breaks down. Iron Man thinks this would be a great time to test out his newest gadget, a power amplifier. It is supposed to make everyone's powers stronger for a limited amount of time, but instead it switches all of their powers! The Squaddies now have to learn how to deal with their new powers and fix the Helicarrier before the city is destroyed!

Captain America comes to the rescue when villains try to ruin a summer picnic and fireworks show planned by the Squad for the people of Super Hero City.

Thor's home in Asgard is under attack by his half brother, Loki, and Thor and the Super Hero Squad try to fend off the villain and his army of Sentinels.

The Hulk wakes up after having a nightmare, Reptil celebrates April Fool's Day by trying to pull pranks on the other members of the Super Hero Squad, and Captain America and Falcon go to the rescue when Redwing is kidnapped.

When Doom invents a time machine, he decides to go back in time and get rid of the Super Hero Squad before they became superheroes. But will his evil plan work?