When Sarah goes out one morning to feed her rabbit, she discovers to her horror that Fridolin has disappeared! Has she really forgotten to lock the cage door? Though Sarah discovers suspicious footprints, nobody wants to believe her, except for Justin and Anna. Together they want to find out what really has happened. While undertaking their detective work, the three animal agents stumble across a malicious plot and a dark secret! Take on the role of Anna, who is spending the holidays at her uncle’s farm, or play the part of Justin, investigating the secret of the lost animals.