They say you can never go home again, and for Persephone Fraser, since she made the biggest mistake of her life a decade ago, it feels too true. Instead of spending a dazzling summer at her childhood lake, she's in a chic city apartment, hanging out with friends, keeping her heart at a safe distance.

Until she gets the call that sends her racing back to Barry's Bay and Sam Florek's orbit—the man she thought she could never live without.

For six summers, during hazy afternoons on the water and warm summer nights working at his family's restaurant and sharing books—medical texts for him, horror stories in progress for her—Percy and Sam were inseparable. Eventually, that friendship turned into something surprisingly more, before it spectacularly crashed.

When Percy returns to the lake for Sam's mother's funeral, their connection is undeniable as ever. But until Perry confronts the decisions she's made and the years she's spent punishing herself for them, they'll never know if their love might be larger than the biggest mistakes of their past.

Spanning six years and one weekend, this is a sweeping, nostalgic look at love, people, and choices that forever mark us.