After the world ends the only thing that will be left are cockroaches and love triangles. Based on the 1974 young adult novel by Robert C. O’Brien, Z for Zachariah is the post-apocalyptic story of the last surviving woman on Earth (Margot Robbie), the radiation-poisoned scientist she falls in love with (Chiwetel Ejiofor) and the mysterious stranger who complicates things between them (Chris Pine).

Craig Zobel, who directed previous Sundance hit, Compliance, ages the story up for a more mature audience. Margot Robbie, while still the perpetual woman of desire, looks to have a chance to stretch her acting abilities in new ways. With Ejiofor and Pine joining her, the movie should carry some very strong performances. The film premiered earlier this year at the Sundance Film Festival to mostly positive reviews that praised the film’s acting and character development. Word is that despite the romance story sold in the trailer, the film tackles a lot of complex themes that go beyond love. Hopefully Z for Zachariah will be able to tackle something new and powerful within the post-apocalyptic sub-genre.

Z for Zachariah will be released in the U.S. on August 21st.