Ash, Iris, and Cilan arrive at Nacrene City, the location of Unova's second gym. When they arrive at the gym, which is located in the city's museum, the door is locked. They soon find out from the museum's director, Hawes, that some strange things have been happening in the museum and it is supposedly haunted. Ash, determined to have his gym battle, decides to head inside and find out what is happening. Iris and Cilan also want to see what is going on so they can prove to each other who is right about the truth behind the strange events. Meanwhile, Team Rocket is given the assignment of breaking into the museum to steal a meteorite.