Living in bustling New York didn't make Ada Santorini happy. Her success at work is overshadowed by a personal tragedy: two years ago, she lost her lover and daughter. Fleeing from the hardships of everyday life, Ada decides to settle in a houseboat on Lake Union in Seattle. There, she suddenly comes across a mysterious chest that hides ancient secrets. Half a century ago, in this very place, young Penny Wentworth experienced a great love and suddenly disappeared. Ada
solves the mystery of her disappearance with the participation of Alex, a photographer who lives in a nearby house. Gradually, the woman learns a story that is strangely intertwined with her own. Will Adi have the courage to fall in love again?