For months Summer is trapped in a cellar with the man who took her - and three other girls: Rose, Poppy, and Violet. His perfect, pure flowers. His family. But flowers can't survive long cut off from the sun, and time is running out...

Nishimura Riki is a devil who, as a punishment for not fulfilling his duty, was exiled to earth by his own father. He had to pretend to be an ordinary schoolboy and collect people's souls. The more souls he collected, the faster he would return back to hell, but the use of magic added to his time on earth Alexia Park never believed in devils-until she met one. After transferring to an elite school in Korea, Alexia thought she'd left her complicated past behind. But things take a strange turn when she begins to notice the boy who always skips class, walks like he's running from something, and stares at her like he knows her soul. That boy is Nishimura Riki - and he's not human. But can a devil ever be loved? And will Alexia survive the truth that binds them?