Crayon Shin-chan Spin-off 2x7

To find out how to beat Obaan, the Kasukabe Guard members watch the final episode of the TV series called "Goodbye Obaan" but the DVD has been rented out. The Kasukabe Guard and Middle-aged Mask head to Chindarake to defeat Obaan, although they don't know how just yet. Will they be able to get there without being caught?