Tập 5: Rio và bạn bè làm việc tại một sòng bạc trên núi, nơi một con robot chia bài thách thức Rio tham gia một cuộc đua trượt nước với mức cược cao.

Howard sends Rio, Rina and Anya to work at the Sky Resort casino situated at the top of a mountain. Once there, they meet the resort's dealer, Linda, who gives them a tour of the facilities. She is soon revealed to be a robot, and the resort's main terminal. The resort opens the next day, floating itself and its customers high into the sky. Just then, a boy reprograms Linda to challenge Rio to a Gate Battle in which they must both race each other down a giant water slide. The match is a close call throughout, with Linda manipulating the course to catch up; however, Rio wins when Linda loses her head. After the boy relinquishes control of Linda, the mastermind, Cartia Goltschmidt, approaches Howard. (Source: Wikipedia)

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