Linny has been fascinated by disappearances, ever since her sister Grace ran away in the middle of the night without saying goodbye. Sebastian can tell you how many galaxies there are, and knows how much plutonium weighs. But the one thing he can't figure out is the identity of his birth father. They've never met, but Linny and Sebastian have one thing in common: an obsession with famous novelist and filmmaker Alvaro Herrera, who went missing three years ago and has just reappeared. As they learn more about the mystery of Alvaro, Linny and Sebastian uncover the answers they've been searching for.