For fear of summoning evil spirits, Native superstition says you should never, ever whistle at night.

Henry Hotard was on the verge of fame, gaining a following and traction with his eerie ghost-hunting videos. Then his dreams came to a screeching halt. Now, he's learning to navigate a new life in a wheelchair, back on the reservation where he grew up, relying on his grandparents' care while he recovers.

And he's being haunted.

His girlfriend, Jade, insists he just needs time to adjust to his new reality as a quadriplegic, that it's his traumatized mind playing tricks on him, but Henry knows better. As the specter haunting him creeps closer each night, Henry battles to find a way to endure, to rid himself of the horror stalking him. Worried that this dread might plague him forever, he realizes the only way to exile his phantom is by confronting his troubled past and going back to the events that led to his injury.

It all started when he whistled at night....