Marnie Harder wants to find love like everyone else. The only catch—she desires to be the third in couple. She has her sights set on her hot neighbor, Madison Williams, and her boyfriend, Drake Ellison. The night Madison knocks on Marnie's door to borrow some sugar, Marnie gets a taste of something sweet. And when Madison's boyfriend joins the party, Marnie binges on more than the candy he brings with him.

Leave it to her family and her brother's meddling monkey to spoil the morning after. But in the wake of candy wrappers, wild passion, and broken furniture, will Marnie be left craving more, or will love sweeten the deal?