When Tomi Hadley and his brother, Ren, make fun of their Japanese-born mom's annual Setsubun bean-throwing celebrations, she's furious. She warns them that their ridicule of her folkloric beliefs could be deadly. As if to prove her words, shortly after leaving her house, the two men are almost killed in a car accident by a hit-and-run driver.
Tomi's whole world collapses. Worried about his brother, whose injuries are severe, Tomi struggles to put the pieces of his life back together. This is nearly impossible, however, since he loses his dream job due to his inability to work, and then there's his mom's insistence that oni, Japanese demons, caused the collision.
But one day, when Tomi sees a man washing his car on the street, he realizes it's the same vehicle that caused the accident -- a classic red sports car called a Crimson Cat. And the driver, the surprisingly handsome attorney Dusty Grayson, seems to be a man of hidden depth and many, many secrets...