Jamila Waheed is looking at a lonely summer after she moves into a new neighborhood until she meets Shirley Bones, and the two become unlikely friends. A boy named Oliver shows up asking for Shirley's help to find his gecko who Oliver believes was kidnapped, and Jamila discovers that Shirley is the neighborhood's kid detective. But when the case puts their friendship to the test, the girls have to put their reservations aside to track down the missing gecko.