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.