The film is directed by Vincent Perez, a well-known French handsome cross-border director. Born in 1964, Perez was very popular in the 1980s and 1990s, starring in classic works such as "Fan Fang" and "Queen Margot". Perez showed his talent as a director very early, and two of his works were shortlisted for the short film unit of the Cannes International Film Festival in 1992 and 1999. In 2002, Perez made his feature film debut "Angel's Skin", and in 2007 he directed "Secrets". This film is Perez's largest investment and the first time he was shortlisted for the main competition unit of the A-level international film festival. The story of "Berlin Alone" takes place in Berlin in the 1940s. The working-class couple Otto and Anna sent their only son to the battlefield. Unfortunately, their son died in the tragic war. The couple decided to resist the totalitarian rule of the Nazi Party in their own way. Soon, their actions were discovered and they were hunted down and threatened by the Gestapo. This World War II film, which reflects a big theme from a small perspective, has attracted many heavyweight stars. Emma Thompson, a British actress who won the Oscar for Best Actress for "Howards End", plays a sad mother; Brendan Gleeson, who was nominated for the Golden Globe Best Actor for "The Killer", plays a strong father. Daniel Bruhl, who once shined in "Goodbye Lenin" and stunned Hollywood with "Rush", will star with two veteran actors.