A strange mystery unfolds in the county of Kent, England. The county's centenary celebrations are going on and the tennis tournament is an important part of it. The mayor of the county wants to honour the winners of the tournament at Hyde Park, London. To the winners' shock, the trophies are vanishing!The twins, Jack and Zack, along with their close friends - Bryan and Ryan - who also happen to be twins, decide to solve the mystery. But they have no leads! The two sets of twins, together often called the 'Quadruplets', are ready to face the challenges and brace themselves for solving the issue at hand.Will they be able to retrieve the trophies in time? Or will the trophies vanish forever?