Kyp Finnegan is lost in Chimera after running away from the imposters pretending to be his parents. Chimera is as remarkable as it is dangerous - a fantastical world of lost properties in which bowties evolve into butterflies and abandoned sofas transform into snorting herds of soffalos! With the help of Atticus Weft, a sock-snake with a secret, Kyp must evade the clutches of Madame Chartreuse, who is determined to add him to her collection of lost children and imprison him in Chimera forever...