Angel is a prototype. Designed and built to resemble a human, she is programmed to think herself far inferior to them. Her emotions are just digital codes and a robot's life is worth nothing compared to a human's... or so they say.

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...