Mari, a high school student, wanders between life and death in a boyfriend's motorcycle accident. She, who is undisciplined in this world, heads to the ghost gate where the dead always go through with the god of death. However, the door closed when Mari tried to go under the gate... What is the most difficult truth to die?

The "gate of the dead" where the souls of the dead always pass. Mari, who wanders between life and death in a traffic accident, looks back on her life while talking with the souls of various dead people in front of the gate.