When Biff, Chip and Nadim return from the charity shop with a metal detector, Gran inspires them to use it to track down the lost treasure of the allotment. Mum used to love treasure hunting in the allotment when she was a little girl, but she never found the hoard. The children, armed with their treasure detector, set off on an adventure to locate it and give it to Mum.

Unfortunately, they find it harder than they thought, and instead of treasure, they just turn up piles of junk. But when they’re called upon to use their treasure-hunting skills to help Lee find his lost laser ring, the children uncover something surprising and eventually realise that treasure can come in many forms. Show less