Wicked Science (2004)

Season 2: Episode 8

After Niki gets criticized by her swimming coach, she tells Toby not to worry about it and says it's a confidence thing. Toby makes her a confidence ring, but when Russ puts it on, he refuses to take it off, until he loses it. Meanwhile, Verity wants to form a cheer squad to help win the swimming championships but keeps getting ignored, until she finds the ring.