Demon is a lovable dog who enjoys catching and eating ghosts. Mike Rawlins helps some stranded teens on their way to a haunted house Halloween night jaunt. Horror and a canine savior bond together an unlikely team of kids, led by the dog who knows no fear: Demon.

Demon, Mike, and the gang fight on against the dreaded Haunts. The teen wild bunch band form Demon Inc to pay for the paranormal battles thrust on them. With the SyFy Channel writing checks for exclusives, they go after lost kids and the dreaded Haunts. Scarred by the Haunts and healed with holy water, Mike faces a growing darkness inside him, and unusual powers stumping even his canine partner.

Demon, Mike, and their Demon Inc crew take the dimensional war to the Haunts. Demon and Mike communicate directly with hilarious results, but the darkness within Mike grows after another Haunt wound and holy water healing. Facing Haunt attacks, sexual awakenings, and teenage drama, the kids turn to their sarcastic paranormal pup Demon for rebuke and humor to keep their minds set on survival and victory.