Maggie May Wheeler is living her best life--at thirty, she has big plans for her vintage record shop and is about to be engaged to her childhood best friend. But when she stumbles across a letter she wrote to her future self when she was thirteen, she realizes it may not be enough. The letter ignites a desire to find her birth mother and discover where she really belongs.

Her search takes her to dreamy Fire Island, where her birth mother is a guest at a wedding. As Maggie spies on her biological family, she's caught between diving into their chaotic lives and returning to her comfortable world. Things heat up when a charming local makes her an offer to crash the wedding as his date.

Is it the island's magic, the whirlwind of the weekend, or the thrill of a fake beau that has her rethinking everything? Swept away by every love song she hears, Maggie must figure out where her heart truly lies.