Nicholas, loves playing with his mischievous middle school gang. When his dad gets a job transfer to the South of France, the gang plans a treasure hunt to prevent the relocation, as Nicholas can't bear leaving his friends.

What Nicholas (9) loves most is playing with his gang of middle school pals, The Invincibles. Adorable, yet mischievous, they have all sorts of adventures together and life could not be funnier. So when his dad gets promoted and announces that the family is relocating to the South of France, his world falls apart. Little Nicholas cannot live without his friends. But the pack has a plan to prevent this terrible relocation: a treasure hunt.