La gifle

Khadidja wakes up after her first night in Lyes' cabin. Lyes asks Philippe for a big favor to improve his guest's daily life: give her his mattress. In exchange, he promises to introduce her to his idol.

Khadidja now has a mattress, but the hut is still quite dilapidated, especially when it rains. The whole gang sets off for the Ravin de la Femme Sauvage, a wooded area reputed to be haunted, to find the materials needed to build a roof.

Mr. Germain gives the boys a letter Malek has written to Khadidja. But Philippe, still furious at Lyes for throwing tomatoes, refuses to set foot in the cabin again.

It's an important day for Philippe's father: his boss has invited the whole family to lunch at the beach. Philippe is delighted, but a little stressed because he's going to run into Annie, with whom he's secretly in love.

The children hatch a plan to get the notebook back from Guy: Lyes must retrieve it undetected. The clock is ticking and Khadidja's date with Nejib is fast approaching. But the plan goes awry.