In this world there are predators who eat people and prey who are eaten. The process is mostly painless, with the prey being melted and absorbed then turned into waste. Lita is a bunny girl and a prey, but she is a very energetic tomboyish woman. She is helping a predator to train his ability to swallow someone whole and digest them. Her ultimate objective is to be digested by her student. She is willing to be digested but doesn't make it easy, and will try to escape.