Two pre-teen boys find themselves stuck in a time loop, where every day is the same Monday.

The series revolves around the life and adventures of Luc and Theo, two 12-year-old best friends who get stuck in a time loop where every day is Monday, and as the Monday is always the same, they know everything that will happen before it happens. They use it as an opportunity to do whatever they want to, most primarily at school, what usually gets them in trouble.