Lulu is a little girl with a very big dream: she wants to be on Broadway. She wants it more than anything in the world. As it happens, she lives in Broadway's Shubert Theatre; so achieving her dream shouldn't be too tricky, right? Wrong. Because the thing about Lulu? She's a little girl mouse.
When a human girl named Jayne joins the cast of the show at the Shubert as an understudy, Lulu becomes Jayne's guide through the world of her theatre and its wonderfully kooky cast and crew. Together, Jayne and Lulu learn that sometimes dreams turn out differently than we imagined; sometimes they come with terms and conditions (aka the company mean girl, Amanda). But sometimes, just when we've given up all hope, bigger and better dreams than we'd ever thought could come true, do.
Lulu's show has just received its closing notice. Lulu and the rest of the company are devastated. Lulu takes readers back in time to just after she made her onstage debut, when Lulu and Jayne rising in popularity and esteem. However, there is one critic who is determined to break Lulu's career.
With additional casting drama happening with Jayne, Amanda, and new girl Olivia, the news about the show closing comes as a real blow to everyone. When Benji, Lulu's brother, comes up with an idea on how to boost ticket sales, the company members hit the streets, desperate to save the show from closing. But will Lulu and Company be able to stop the nasty critic from completely ruining Lulu's dreams and those of the rest of the cast?