Xia Tian and his friends met the magical snail Kaka in the summer. Kaka had come to the surface from the center of the earth to find the purest water source. Xia Tian and his friends help Kaka avoid the pursuit of chef Ouyang Fei and find the fountain of life. After Kaka recovers his energy, he helps to prevent the fire that took his father's life in the past.