Because of her past, 17-year-old Rio lives her days filling the emptiness in her heart with money—until one day, she meets a university professor named Kouki and falls in love.
A young man named Teru, mentally altered by a childhood injury, runs a laundry and falls for Mizue, a lonely young woman with internal scars.
On the outset, the Okunos seem like a normal happy family with father Tadashi and his two bright sons, genetics researcher Izumi and artsy Haru. When a series of arson attacks strike the neighborhood, clues left at the crime scenes seem to be somehow related to the Okunos. Izumi and Haru try to get to the bottom of mystery, slowly unveiling a tragic family secret that has come back to haunt them.
