Amy and Leela have gone for fun with their lizard friends to the planet Amazonia, when suddenly they begin to lay eggs of an unusual size, from which emerge creatures that could change the course of the planet.

Sara's world changes when her assistance inadvertently damages a butterfly's cocoon, leaving its wings crippled. To help the butterfly, Sara will have to fuse with it, charging radically her own body... forever.

Faced with the constant defeats of the warrior beasts at the hands of the Flashman, Dr. Keflen decides to perfect his creations using the genes of Emperor Lar Deus and Kilt will be his first guinea pig.

Rika continues with her doubts about digivolution while Ice Devimon comes stalking her, since he considers her his soul mate and is determined to do anything to convince her to become a digimon.