Herman and Maddie are life long best friends. They have opened up their brand new motel, a triumph in their collective careers, and with the 4th of July weekend upon them, they want to make sure their place is as good as it can be. One night, a couple of drifters rent a room for the night, the motel's first customers. When the couple takes a dip in the pool, they are eaten alive by a monstrous being that has taken shelter in the brand new pool. When Herman and Maddie discover blood and fingernails by the edge of the pool, they panic and do everything they can to hide any evidence of their customer's existence. When a pair of cops begin their investigations into a murder than has happened over by another motel in the area, they rent a room in Herman and Maddie's place, and they start to worry they may discover that they have hidden a secret. Unknown to all is that the creature has no plans of going away, and all hell breaks loose when a bus full of party goers arrive for the weekend. Will Maddie and Herman discover what they have hidden in their pool before it is too late?