In Earth's future, a global crop blight and second Dust Bowl are slowly rendering the planet uninhabitable. Professor Brand (Michael Caine), a brilliant NASA physicist, is working on plans to save mankind by transporting Earth's population to a new home via a wormhole. But first, Brand must send former NASA pilot Cooper (Matthew McConaughey) and a team of researchers through the wormhole and across the galaxy to find out which of three planets could be mankind's new home.

In 1962 Hong Kong, neighbors Su Li-zhen (Mrs. Chan) and Chow Mo-wan (Mr. Chow) discover their spouses are having an affair. As they spend time together, they develop feelings for each other, but their relationship remains chaste and unspoken, reflecting societal constraints and their own moral compass.