'I bring together the living and the departed. I am the Go-Between.'

When Hirase, a young woman from Tokyo, arranges an appointment with the Go-Between, she doesn't expect a teenager to show up. Dressed preppy-style in a duffel coat and carrying a notebook, he invites the dead back into the real world - at least, this is what Hirase has pieced together from his website page.

Ushered into a luxury hotel to await her meeting, the Go-Between lays down the ground-rules: the reunion lasts one evening under a full moon; the dead person cannot be called back by anyone else, and may refuse to meet.

Four more characters will go to a reunion:
- a woman struggling with low self-worth finds the TV star who once helped her
- an elder son, regretful of his greed, sees his deceased mother
- a young woman reunites with the rival whose death she deliberately caused
- a weary salary man meets to solve the mystery of his missing girlfriend

With each gripping story, clues are scattered like gems for the reader to piece together the emotional truth behind Lost Souls Meet Under a Full Moon.