The zoo's animals love learning new tricks - Clara the seal can jump, Cheryl the cheetah can touch a ball with her nose and Duchess the elephant can hold her legs in the air. Football-obsessed otters Willie and Wilby, however, aren't interested in learning anything. Neither is self-appointed leader Jurgen, who refuses to learn any new tricks. While dedicated keeper Lee tries his best to get the otters' attention, the gorillas are trying their hardest to find out why Jurgen is so against learning anything. It's all a mystery until Hank finally reveals the embarrassing 'trick' Jurgen's been hiding since he was a boy.