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...

A weekend partying at a remote cabin is just what Mackenzie needs. She can't wait to let loose with her friends. But a crazy night of fun leaves two of them dead-murdered. With no signs of a forced entry or struggle, suspicion turns to the five survivors. Someone isn't telling the truth. And Mackenzie's first mistake? Assuming the killing is over...