The Super Hero Squad suffers a time mishap that transforms several of the Squaddies into toddlers! It's up to the unaffected heroes to find a way to fix the Super Hero Toddlers before they are stuck that way forever.

As the Dark Surfer prepares to end the universe, Ms. Marvel reveals a secret that could finally bring down the Infinity Gauntlet! Meanwhile, Doctor Doom prepares one final measure to try and stop the Dark Surfer with his own villainous team.