When Adam and his friends accidentally reveal the secret location of ex-MI6 quartermaster, Professor Goodspeed, they don’t expect supervillains to turn up on their doorstep, looking for his most dangerous invention. Drawn into a dastardly plot, the friends must rescue the Professor and take on evil Dr Toe and all his henchmen to boot.

It’s going to take buckets of bravery, a truckload of gadgets – including a flying bike, a robot-shark shield and, the deadliest of weapons, a glitter glue grenade – along with A LOT of luck to defeat the bad guys and stop them taking over the world.

At least the summer holidays won’t be boring…