In a small French village, the lives of the inhabitants take an unexpected turn when an ancient locomotive is chosen as the venue for a play that promises to be the event of the year. The director, a passionate theater lover, faces numerous challenges as he attempts to bring together the various characters of the town to embody the protagonists of his ambitious production.
Among the actors are a young dreamer yearning to escape the routine, an elderly man harboring secrets from the past, and a couple of lovers whose differences threaten to tear them apart. As they rehearse and perform the play, their own stories begin to intertwine, revealing the tensions, desires, and longings that lie beneath their lives. However, not everything is easy, as a mysterious sabotage endangers the realization of their collective dream.
As rehearsals progress, the air fills with confusion and mixed emotions, leading the characters to confront their own fears and frustrations. In the midst of the crisis, it is discovered that the true performance is not only on stage but also in the internal struggle each one faces. With an unexpected climax that will unleash laughter and tears, this play reveals how the drama of life can transform through the magic of art and camaraderie. Ultimately, everyone will learn that the true act is to live.