In a quaint little town, where the streets were lined with charming shops and friendly faces, there lived two sisters named Milly and Tilly. These two girls were always up to something, their mischievous spirits leading them on all sorts of exciting adventures.

One sunny day, Milly and Tilly decided to explore the local history museum. They were fascinated by the old artifacts and the stories they told. But when the museum curator's back was turned, the sisters couldn't resist the temptation to try on some of the costumes from a historical exhibit.