Betsy is scared enough on her first day of Kindergarten; she doesn't need the responsibility of taking care of the class Salamander, Sydney. But when Betsy loses Sydney and she wants to tell her teacher that she'll try to come back next year for school, her new friends come to her aid and Betsy takes responsibility and tries to find Sydney. Betsy and her classmates visit a Museum. Betsy's curious friend Billy decides to check out another part of the museum that they were not allowed to go to, and Betsy and Billy get lost. They quickly learn about why you should never take off without telling an adult and the rest of the class also learns about how fun museums, and field trips in general, can be.