The main character is a doctor. He happens to come to his hospital because Ai, an idol he has been promoting, is pregnant and is going to give birth in secret. However, the protagonist gets caught up in a whirlpool of events and is stabbed to death. When she wakes up, she finds herself reincarnated as Ai's child, Aqua. From there, as Ai's child, he supports her. Ai is also stabbed to death. The hero swears revenge. He enters the world of show business and searches for the murderer.
