Samson the dog meets Rodolpho after a great day swimming at the beach. He finds out that he is a member of the Italian lifeguards K9 division. After seeing how strong Samson is in the water, Rodolpho invites him to join the team and train with them. Samson learns about open water safety and works hard to pass all of his exams. He eventually passes and Rodolpho, introduces Samson to Tom and John. After seeing the work of the K9 division they decide they need a dog lifeguard at their beach in Cornwall. Though nervous at first, Samson is excited to start his new job. Samson teaches the public, alongside Tom and John, the rules of the beach and often stage rescues to inform. He keeps a watchful eye on the sea and the weather, keeping all of his visitors safe. One stormy day at the beach, Samson has to perform an open water rescue. Will he be able to save the day alone?