H2O: Just Add Water (2006)

S3E5 Big Ideas

In an effort to attract more customers to the cafe, Zane organizes a dirt bike race. However, Rikki uncovers that it's all a ruse. Determined to set him straight, she joins forces with Bella to give him a taste of his own medicine. Meanwhile, Lewis and Cleo stumble upon a fascinating discovery about the effects of combining the waters in the Moon Pool.