Jack Chambers discovers a cult-like group of his father's followers whose obsession is the pursuit of invisibility found in the color indigo, while he reunites with his half sister Louise and his father's mistress to claim their inheritance.

A young couple manages to dig their way out of the snow when a flash avalanche interrupts their skiing trip in the remote French Pyrenees, but once freed the couple discovers the world has been overtaken by a terrible silence with cell phones and land lines cut off and a swift evacuation leaves them alone to face the coming threat of another deadly storm.