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 he could not do with fun conditions ... they have to take their friend's ashes with them so that he can “live” the experience too. For the love of Juan Luis, these three 40-year-old teenagers will have to solve their differences, visit the same cities and experience the same revelries, but in a much more pathetic way. And with cholesterol through the roof...