Adam's plan to propose to Allie hits a snag when he must win over her skeptical dad and survive a wild family gathering.

Little does this family know that a much bigger problem crashed down in the woods the night they arrived: a big, body-snatching, hive queen alien, and it’s looking for its perfect match. Soon enough, the alien will take the family members one by one. Adam will have to team up with Government Agent Owens to take down the alien, rescue his girlfriend, and save the rest of the world.

Adam se enfrenta al desafío de convencer al escéptico padre de Allie de que se case. Sin que ellos lo sepan, surge una amenaza alienígena que les arrebata el cuerpo a la familia. Adam corre contra el tiempo para salvar a su amor mientras lucha contra la amenaza extraterrestre.