Pokémon: Black & White A Night in the Nacrene City Museum!

Ash, Iris, and Cilan arrive in Nacrene City and head to the museum where the Gym is located, but find it locked because it is believed to be haunted. Cilan says he doesn’t believe in ghosts but Iris isn’t so sure. The gang are led to a sarcophagus and a death mask believed to be linked to the Mask Pokemon Yamask. As they prepare to camp inside the museum and discover the truth, Team Rocket meets up with another contact., A museum seems haunted in Nacrene City.