Eden and Esme are fraternal twins who just passed their junior year and are set to go to Granny's house for the summer which is at a beautiful place beside the sea and they love their Granny. There is only one problem though they aren't going alone; the 'Cretin Cousins' are going with them. They are THE most irritating creatures on the face of the earth. Although they are sulky, they still try to ignore them and ready themselves to enjoy the summer. But the boys are too cunning to let the girls ignore them and seize the only chance to pester them non-stop for the next 70 days. But the sisters/besties have no plan of backing down, not this time. Soon a prank war breaks out between the four. So it’s two against two? Bring it on...