Jonathan Hill is home alone on a stormy night, babysitting his baby sister who won't stop crying. When he finds her room door oddly locked, it's only the beginning to a horror filled night.

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...