Caveboy loves banging his club, running really fast, and playing with his friends, but when his club breaks, he needs to find a new one, leading him to making a new friend and discovering his own bravery.
On the first day of "baseskull" season, Caveboy teaches Mags the basics of batting, helps her find her talent for pitching, and saves his teammates from danger while searching for a missing necklace at the end of practice.
Best friends Agnes Pig and Clarabelle Chicken share their favorite activities for each season, from collecting hazelnuts in winter, to celebrating Clarabelle's birthday in spring, to spending a day at the beach in summer, to buying new sneakers in autumn.