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 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 between cautious joy at having found them, and the true meaning of family in all its forms.