While the artists of the Gare XP collective build a model train for the inauguration of a new place, they recall 10 years of a common life course. Evolving between piracy and diplomacy, the collective has opened unoccupied places all over Paris. Its history marks the evolution of the squat world, its role and its integration in the city. As a cultural and social driving force within neighborhoods, it now invites the public to share its experiments with an alternative way of life through a little train ride.