Grace, adopted at birth, is raised as an only child. At sixteen she's just put her own baby up for adoption, and now is looking for her biological family. She discovers Maya, her loudmouthed younger bio twin sister who was also adopted ; and Joaquin, their stoic older bio brother, who has no interest in bonding over their shared biological mother after seventeen years in the foster care system. Grace struggles to between cautious joy at having found...

For most of Ben's life, he has been a kid without a mom. He has his dad, who knows Ben doesn't like oatmeal and always hugs Ben before bed. And he has Sunshine, his loyal little dog, who is never far from his side. But his mom, who left when he was young, has just been a story, faint in his memory. Now he's about to spend a whole week with her on her remote island in the middle of the northern Minnesota wilderness. Though he's nervous about bears...

In 1941, after Hitler declares war on the United States, unleashing U-boat submarines to attack American ships, Louisa June, with the waves outside her house carrying dangerous enemies, must help her mother after her father and brother are caught in the crossfire.