The third graders at Trident Academy are traveling to the surface of the ocean for the first time ever for a "hugely" exciting activity: They're going to visit a pod of humpback whales! But Kiki is less than thrilled. In fact, she's scared from the top of her head to the tip of her tail. After all, the enormous creatures could swallow her (and maybe her entire class) in one giant gulp! Kiki's pals Shelly and Echo try to help shrink her fears, and when a new friend comes along--a very big, whale-size friend--Kiki's courage emerges, and the fun looms large.