Shinji, who lost his young son Keita in a sea accident in the past, heard about "Mukasari Ema" from a student at the art class he teaches. In order to make a memorial service for a family member who died at an early age, the student draws a picture of his imaginary marriage partner and dedicates it to a temple. Shinji begins to paint the Mukasari Ema for Keita. Then a strange change begins to happen to Shinji.