Linguistics professor Louise Banks (Amy Adams) leads an elite team of investigators when gigantic spaceships touch down in 12 locations around the world. As nations teeter on the verge of global war, Banks and her crew must race against time to find a way to communicate with the extraterrestrial visitors. Hoping to unravel the mystery, she takes a chance that could threaten her life and quite possibly all of mankind.

It's the summer of 1983, and precocious 17-year-old Elio Perlman is spending the days with his family at their 17th-century villa in Lombardy, Italy. He soon meets Oliver, a handsome doctoral student who's working as an intern for Elio's father. Amid the sun-drenched splendor of their surroundings, Elio and Oliver discover the heady beauty of awakening desire over the course of a summer that will alter their lives forever.

When a beautiful stranger leads computer hacker Neo to a forbidding underworld, he discovers the shocking truth--the life he knows is the elaborate deception of an evil cyber-intelligence.

Kat Stratford is beautiful, smart and quite abrasive to most of her fellow teens, meaning that she doesn't attract many boys. Unfortunately for her younger sister, Bianca, house rules say that she can't date until Kat has a boyfriend, so strings are pulled to set the dour damsel up for a romance. Soon Kat crosses paths with handsome new arrival Patrick Verona. Kat may let her guard down enough to fall for the effortlessly charming Patrick.

A disheveled man who wanders out of the desert, Travis Henderson (Harry Dean Stanton) seems to have no idea who he is. When a stranger manages to contact his brother, Walt (Dean Stockwell), Travis is awkwardly reunited with his sibling. Travis has been missing for years, and his presence unsettles Walt and his family, which also includes Travis's own son, Hunter (Hunter Carson). Soon Travis must confront his wife, Jane (Nastassja Kinski), and try to put his life back together.

Two teenagers share a profound, magical connection upon discovering they are swapping bodies. Things manage to become even more complicated when the boy and girl decide to meet in person.