When professional hockey player Sig Gauthier's car breaks down and his phone dies, he treks into a posh private country club to call a tow truck, where he encounters the alluring Chloe Clifford, the manic pixie dream girl who captivates him immediately with her sense of adventure and penchant for stealing champagne.
 
Sparks fly during a moonlight kiss and the enamored pair can't wait to see each other again, but when Sig finally arrives to meet his dad's new girlfriend over dinner, Chloe is confusingly also there. Turns out the girlfriend is Chloe's mother. Oh, and they're engaged.
 
Sig's dream girl is his future stepsister.
 
Though the pair is now wary of being involved romantically, Chloe, a sheltered harp prodigy, yearns to escape her controlling mother. Sig promises to teach her the ins and outs of independence in Boston--but not inside his bedroom. They both know there can never be more than friendship between a famous hockey player and his high-society, soon-to-be stepsister. But keeping their relationship platonic grows harder amid the developing family drama, especially knowing they were meant for so much more...