The cast is starting to come together for a new post-apocalyptic film. Variety is reporting that Emile Hirsch has joined the cast of The Darkest Hour.

The actor joins Olivia Thirlby in the cast of the film, which centers around a group of kids trying to survive in Russia after an alien attack. The film was described as being in the vein of 28 Days Later.

Chris Gorak (Right at Your Door) is directing the film, which starts shooting in Moscow this June.