When beings outside of time change the past the Calamity Trio are sent to Amphibia as babies. Raised by the Planter family the girls grow up not knowing what they are or where they come from. The adventure begins again with the stakes raised as time itself in the balance.

Anne, Sasha, and Marcy are going to marry 3 brothers who unknown to them are the sons of the Valkyrie Brunnhilde. However, forgotten evil turns the Calamity Trio into the evil Three Goddess Sisters. The brother must work with the Planters and their mother to change them back while the finale battle between god and man Ragnarok rages.

Manny, Frida, and Zoe are pulled into a world where heroes are villains and villains are heroes. Slowly becoming like their counterparts can they make it back home?

After finding the Sky Blade swords Dipper and Mabel's world changes into a more savage one where muscular barbarians fight each day to survive powerful monsters. Now they must adapt to this new world and defend their tribe from its enemies. Contains muscle expansion.