A brother's disappearance turns one family upside down, revealing painful secrets that threaten the life they've always known.

After twelve-year-old Maddie's older brother vanishes from his college campus, her carefully ordered world falls apart. Nothing will fill the void of her beloved oldest sibling. When her parents fly out to Strum's college to search for answers, Maddie is left in the care of her sixteen-year-old sister, who seeks solace in rebellion and ignores Maddie. Drowning in grief and confusion, the family's musical household falls silent.

Though Maddie is the youngest, she knows Strum better than anyone. He used to confide in her, sharing his fears about the climate crisis and their planet's future. So, Maddie starts looking for clues: Was Strum unhappy? Were the arguments with their dad getting worse? Or could his disappearance have something to do with those endangered butterflies he loved . . .

Scared and on her own, Maddie picks up the pieces of her family's fractured lives. Maybe her parents aren't who she thought they were. Maybe her nervous thoughts and compulsive counting mean she needs help. And maybe finding Strum won't solve everything--but she knows he's out there, and she has to try.