Mike has spent the last few weeks isolating after catching the shrinking disease. Now that he's not contagious anymore, his friends volunteer to pick him up so they can spend the day together with the idea of driving to the local beach. He will finally be able to breathe some fresh air and enjoy the sight of some gorgeous – and gigantic - bikini beauties, but he will have to deal with the pranks of Megan, his cheeky lifelong friend, the scorn of Stacy, who has an unnatural fear of tiny people, and the thirsty glances of Rose, who has an unconfessed crush for him. Perhaps he should have chosen a less exhausting setting for his first foray into the now gigantic outside world…