A new breed of aggressive, ravenous sharks cracks the frozen ocean floor of an Arctic research station, devouring all who fall through. As the station sinks into frigid waters, those alive must fashion makeshift weapons or suffer the same fate.

When a troubled teen is pushed too far, he takes action into his own hands. The prank he plans ends with the death of a young one! Months pass and everyone acts as nothing happened. Soon their actions will end deadly and end with his laugh.

When one of their own loses his wife and daughter at the hands of a serial killer, a team of ghost hunters is determined to capture the spirits of the loved ones so their spirits can finally rest in peace. But as the team goes deeper into the house, the ghosts become more hostile, and the group discovers the true secrets of the house and its murderer.