Due to deadly pollution, Zayne lives inside a mountain on Pluto. He must take the Pluto Placement Test, or PPT, to determine his future. One week later, he gets the PPT results back and he is placed into an unexpected job field. He must straddle his new job, care for his sister, and solve the mystery behind Pluto's pollution...he may find out that the stakes are higher than he could have ever imagined.