A close-knit group of six young friends keep to their riddle club and spend the holidays planning parties, disguises, and contests while camping and returning home between school terms. Their seasonal adventures include Hallowe’en and Thanksgiving entertainments, a camp episode with a rival group, small mysteries and searches for lost treasures, practical jokes, a member acting as an amateur detective, and a recurring snowman puzzle that leads to a final reveal around Christmas, after which they settle back into familiar routines.