Sixteen-year-old introvert Samantha Cross is falling in love for the first time. There's only one problem: she's falling for her older sister's boyfriend, Ben Swift. Her sister Veronica is beautiful, outgoing, and confident. Samantha is used to her sister getting all of the attention and everything she wants, even if she doesn't like it. But now they're being torn apart by love for the same boy, their parents' separation and mother's declining emotional state, and their move away from Calmer Cove into city life in St. John's. As her life crumbles apart around her, Samantha's feelings for Ben only grow stronger. Then she finds out the boy driving the vintage Thunderbird has mysterious issues of his own. Will Samantha let Veronica keep the only boy she's ever loved, or will she end up ruining her sister's happiness to take control of her own? Tensions between the siblings escalate, and Samantha is torn between doing what she thinks is right and acting on her heart's desire. One thing becomes clear: One of the Cross sisters is in for a broken heart.