11 year old Sienna Cogsworth's life is going just like any other middle schooler's, until her aunt Katelyn Cogsworth loses her job and they are forced to move to the middle of nowhere. Guilty of all the sacrifices Katelyn has made for her, Sienna takes it upon herself to help get their lives back on track. Stumbling upon a circus camp opens her aunt's secret past as an acrobat and discovering a mysterious sparrow constellation opens another universe for Sienna: Philoxenia. From taking the identity of a prestigious Whislow Agency detective to journeying on the impossible scavenger hunt of unlocking a wish to the constellation, Philoxenia holds more mysteries than solutions. To save her name from trouble, she takes the Agency's risky case of finding who is stealing all magical entities, battling the greatest villain of all. No matter how hard the feat, she is still faced with the hardest decision she will have to make: giving up Philoxenia's treasures or leaving behind the person she loves the most...