'I Think We're Alone Now' Teaser Trailer: Peter Dinklage, Elle Fanning Face Solitude After the Apocalypse

Reed Morano ('The Handmaid's Tale') directs the two-person cast in the end-of-the-world drama.

Peter Dinklage and Elle Fanning star as lone survivors in the quiet, post-apocalyptic drama I Think We're Alone Now.

Del (Dinklage), a recluse, wanders through his now-desolate small town in New York's Hudson Valley after an unknown cause exterminates the human population. In the teaser trailer, released Tuesday, Del stumbles upon Grace (Fanning), a chatty young woman who disrupts his isolated routine.

Reed Morano (The Handmaid's Tale) directs the film in addition to serving as director of photography and camera operator.

In an interview at the Sundance Film Festival earlier this year, where the movie debuted, alongside writer Mike Makowsky and Fanning, Dinklage said Morano's hands-on approach gave the actors more freedom than typically found on set.

"She was right there with us, and it was very intimate," Dinklage told The Hollywood Reporter.

The film focuses on the mismatched relationship between Del and Grace, the only two characters in the film.

"I felt like [I was] going to get the freedom to create this character and add quirks and details to her," Fanning said. "If it's a huge ensemble, you maybe don't have as much time to do that."

The film was met with mixed reviews after its Sundance debut. THR's chief film critic Todd McCarthy called the low-budget indie "unprovocative" and "dreary," devoid of a meaningful plot twist that moves the film along.

The film will be released in theaters Sept. 21.