Snoopy, in his fantasy, is on a mission. He is there to meet a mysterious woman known only as "La Fleur," who is rumored to possess a rare, exquisite shell that has the power to grant any wish. The shell, known as "Cocco," is said to be hidden in a location only accessible during low tide, and Snoopy must navigate through various challenges to find it. As Snoopy searches for the Cocco shell, he encounters various characters from the Peanuts universe, each playing a role in his adventure. Charlie Brown, Linus, and Lucy all make appearances, though their roles are humorous and often unexpected. For instance, Linus might provide Snoopy with a map that supposedly leads to the shell, but with a condition that involves doing a funny task for Lucy.