A World War II Curtiss P-40 warplane piloted by a doll-like figure is hit by enemy fire and forced to ditch. The pilot's shoes are burned in the landing and he finds women's shoes, which he wears instead. The pilot is confronted by doll-like German soldiers, who taunt him for wearing women's shoes. The Germans threaten to emasculate him, but are killed by a group of doll-like women who come to the pilot's rescue and protect him.
It is revealed that the scenario is part of an elaborate fantasy created by Mark Hogancamp, using modified fashion dolls in a model village named Marwen. Mark imagines that the dolls are alive and photographs his fantasies to help him cope with acute memory loss and post-traumatic stress disorder from a brutal attack he suffered some time earlier, when he drunkenly told a group of white supremacists that he was a cross-dresser.
The dolls correspond to people that he knows in real life: himself as "Cap'n Hogie", the pilot; various female friends as his protectors; and his attackers as German Nazi soldiers. The main villain of Marwen Dejah Thoris, a teal-haired Belgian witch, is obsessed with Hogie to the point where she would send any woman who gets too close to him 15,000,000 lightyears into the future with her magic.
Mark finally agrees to appear in court to deliver a victim impact statement after much coaxing from his attorney and friends, but upon seeing his attackers, he imagines them as Nazi soldiers shooting at him, and becomes terrified and flees, causing Judge Martha J. Harter to postpone the hearing.
Mark falls in love with a woman named Nicol who has just moved in across the street, whom he has added to his fantasy. Mark imagines that the doll Nicol is in love with Cap'n Hogie, and that they get married. In real life, Mark proposes marriage to Nicol, who tells him she wishes to remain only friends. Mark is distraught and contemplates suicide.
In his fantasies, Nicol is shot by a Nazi, who in turn is killed by Cap'n Hogie but brought back to life, along with other Nazi soldiers, by Deja Thoris. Cap'n Hogie realizes that Deja Thoris is both a Nazi spy and the personification of Mark's addiction to the pills that he thought were helping him, but were actually hurting him. Hogie saves Mark by vanquishing Dejah 15,000,000 lightyears into the future, never to be seen again. Mark pours the pills down the sink and vows to break his addiction to them.
Mark attends the rescheduled hearing and delivers his statement. That evening he also attends the exhibition of his work and makes a date with his friend Roberta, who is a sales clerk at the hobby store where he is a frequent customer. The film ends with a photograph of the real Mark Hogancamp, who has a successful career as a photographer.
On April 28, 2017, it was announced that Robert Zemeckis would next direct an untitled drama film that would star Steve Carell. On May 19, 2017, it was reported that Leslie Mann and Janelle Monáe had joined the cast, and on May 23, 2017, Eiza González was also added. In June 2017, Diane Kruger joined the cast to portray a villain, while Gwendoline Christie had also signed on. In July 2017, Merritt Wever and Neil Jackson joined the cast of the film.
Reception
Welcome to Marwen grossed $10.8 million in the United States and Canada, and $2.3 million in other territories, for a worldwide total of $13.1 million, against a production budget of around $39 million.
In the United States and Canada, the film was released alongside Aquaman, Second Act and Bumblebee, and was projected to gross $7–9 million from 1,900 theaters over its five-day opening weekend. After making $909,000 on its first day (including $190,000 from Thursday night previews), three-day weekend estimates were lowered to $3 million.