Roger tends to rush to conclusions. After a misunderstanding, in order to make Fatou happy, our alien brings two retired tourists to Kooh-Los island. But just as quickly, he mistakes their intentions and decides they are a danger to the island. With Fatou’s help, he is going to elaborate a bunch of plans to get them to leave. And in the end, he understands that the couple, even though a bit invasive, are only full of the best intentions in the world.