Year 2020. Pepo, Roge, Costa and Juan Luis, four young men in their twenties, undertake the dream trip: the Interrail. But on their first stop in Paris, the adventure, and their friendship, ends abruptly. Twenty years later Juan Luis has passed away and, as a last will, he has decided to donate his juicy inheritance to his three old friends. But in return he asks them to do the Interrail that...