Sara would be a lot more secure if she could win back her super-hot ex, Skyler, but he's not interested unless they move to the next level. Sara decides to take the plunge without protection, but soon discovers Skyler isn't a normal teenage boy. Something changed on his summer trip to Mexico. When Sara wakes up the next morning nine months pregnant, she turns to the only person she can trust: her nerdy ex-best friend, Hayley. The girls realize this alien problem is only the beginning.