There’s a new sleuth in town – he’s fun, funny, and very 2424!

Max has been handed an ancient mobile phone. It’s from the year 2017, which makes it more than 400 years old! What’s more, it’s full of photos – all of the same person.

Max and Oscar learn that the photos hold a secret that could lead them to fame and fortune. But the secret gets out, and Max and Oscar face the fight of their lives to keep their discovery safe from some very greedy hands…