Meredith Fox has been going to Martha's Vineyard for the summer as long as she can remember. But this summer is the first one back since the death of Meredith's sister. It will all be overwhelming, but even more since since the entire extended family will be together for her cousin's big wedding.

Unfortunately, Meredith's longtime boyfriend unexpectedly dumped her two weeks before the wedding, leaving her dateless. Luckily, she has the perfect distraction. Her family has a tradition of playing the ultimate game of Assassin every summer, and this year it will take place during the week of wedding festivities.

But her target just happens to be a very cute groomsman. She's determined to not let herself get distracted, not let herself be lost in another doomed relationship. But as the week progresses, she can't help falling for him, which may cost her not only the game, but also her heart.

Meredith's family's annual game of assassin at Martha's Vineyard during a summer wedding is the perfect chance to honor her sister's legacy, and finally join the world again. But when she forms an alliance with a cute groomsman, she's at risk of losing both the game… and her heart.