'Gravity': Sandra Bullock Fights to Rescue George Clooney (Video)

Gravity continues to show that being an astronaut is not for the faint of heart.

The film, from Children of Men director Alfonso Cuaron, follows two astronauts as they attempt to survive after an accident threatens their lives. Like the claustrophobic trailers before it, the third look at the Sandra Bullock-George Clooney film provides an extended peek at the space disaster that sets the plot in motion.

In the clip, Dr. Ryan Stone (Bullock) and Matt Kowalsky (Clooney) fight to grab ahold of something as they zoom through space debris.

PHOTOS: The Scene at Comic-Con 2013

“I”ve got you,” Stone says as Kowalsky is projected toward him. If she misses his hand, he’ll be lost.

At Comic-Con, where footage screened to an excited crowd, Cuaron said the human element will be front and center in the film.

“No matter the spectacle, it’s the emotional core,” he said.

The Warner Bros. film hits theaters Oct. 4.