Single mother Maggie Sheets inherits a beautiful beach house with one caveat: She must take care of Edith, the ornery woman who lives in it. Edith has Alzheimer's, but she remembers clearly her daughter Liza, who took her own life, and is not happy to be left to a poorly dressed woman with a toddler in tow. But as summer days wane, a tenuous bond forms, and Edith, who feels the urgency of her diagnosis, shares a secret that she’s held close for five decades, launching Maggie on a mission that might just lead them each to what they are looking for.