There's lots of fun once again for Ralphy, the inquisitive; Jabber the science guy; and LeBean, the friend just happy to be there as they have some amazing adventures. They are suspended over a river trying to catch the big one while being surprised by a bear. Then they create havoc on Mackinac Island in Michigan, when a few hours of free time turns into minutes of horror as horses run wild, and barrels of syrup go flying. Ralphy's determination is tested when the trio's baseball team is faced with losing the big game due to a pitcher melt down. Then the desire to traverse over the dunes of Lake Michigan inspires Jabber to create an ingenious propelling system. Then, Ralphy sees an ad for a paper boat race, which they enter with excitement.