A young worm discovers, day by day, that there are some very good and some not so good things about being a worm in this great big world.

Eva is very excited about a beach vacation with her family and best friend Lucy, but her secret fear of swimming where there might be hungry sharks could keep her from finding the legendary mermowls.

Baron von Bubbles (Bub) is a pug who wants nothing more than to help his human Bella in her craft projects for school, though he is a little apprehensive about the rocket she is making for the Inventor Challenge--so when he ruins the rocket while trying to get at Nutz the squirrel he needs to find a way to make it up to Bella.

Eva's class is putting on a play, Snowy White and the seven owlets, but Eva is a little disappointed when she is cast as the Magic Mirror (and Snowy White's understudy); the owl students are making all the sets, props, and costumes, and rehearsal is a little chaotic--but the play is going well until Snowy White hurts her leg and Eva has to fill in for real.

A famous author is coming to visit and Eva Wingdale and her classmates are assigned to write a story--but Eva is totally distracted because her pet bat, Baxter, has gone missing, and she suspects that the sneaky squirrels have something to do with her missing pet.