When a devastating attack shatters Mark Hogancamp (Steve Carell) and wipes away all memories, no one expected recovery. Putting together pieces from his old and new life, Mark meticulously creates a wondrous town where he can heal and be heroic. As he builds an astonishing art installation—a testament to the most powerful women he knows—through his fantasy world, he draws strength to triumph in the real one. In a bold, wondrous and timely film, Welcome to Marwen shows that when your only weapon is your imagination…you’ll find courage in the most unexpected place.

The intricate history of a beautiful antique violin is traced from its creation in Cremona, Italy, in 1681, where a legendary violin maker (Carlo Cecchi) paints it with his dead wife's blood to keep her memory alive, to an auction house in modern-day Montreal, where it draws the eye of an expert appraiser (Samuel L. Jackson). Over the years between, the violin travels through four different countries, where it has a profound impact on all those who own it.