Ginger and the baby Pea-Rexes discover the lake has become a strange "spa bubble bath." The narrator informs recent volcanic activity has caused underwater thermal vents to open up. The water is too warm for the Cucumberdiles who prefer cool water and have banked themselves. But the water is the perfect temperature for Ginger and the Peas who go for a carefree and super fun swim playing in the warm bubbles.