SPUD - the Super Perceptive Undercover Detectives - are back, and they have another mystery to solve. When Callie, Grace and Bo discover that a tarantula has escaped from the wildlife park, they must find the spider and reunite her with her spiderlings before she dies from the cold. Can Callie's magical hearing aids and Mynah bird Bo - the SPUD team's Spy in the Sky - help to find the missing creature before it's too late?