We left Cora, Nadine, Mathieu, and his brother Louise, who we previously called "Hikers", ten years ago in Corsica. They're now in their forties. They're still very close and have decided to set off on vacation together again, just the four of them, like they did in the past. Hiking, it must be said, was not really their thing. But, back then, sporting vacations were the trend. So, they tried them. This summer, they've settled on Saint Tropez. After all, who doesn't go at least once in their lives? But they hadn't counted on the fact that in Saint Tropez anything can happen - even like bumping into Eric, their guide on the walking track in Corsica. The person that they'd vowed to avoid for the rest of their days. Except Eric has changed, transformed even. And there are weighty arguments in favor of him taking up the role of guide once more.