After Loki blasted the Avengers with his rejuvenation spell, Steve, Tony, Bruce, Thor, Natasha, Clint and Loki himself have returned to their baby and toddler years. They have no recollection of who they will become, the battles they fought and the legacies they are destined to be. They have to survive babyhood until they can return to their previous state. Will the Avengers ever return? Or will toddler time be the end of them all?

Jane kanske är den enda som kommer få ta del av ett äventyr som plötsligt dyker upp mitt framför fötterna på henne. Om hon misslyckad kan världen gå under, men om hon lyckas vet hon inte vad konsekvenserna blir...