The sad life of a washed up western film star begins to turn around when he learns of a child he may have fathered.

For the last 40 years, the photographer Sebastião Salgado has been travelling through the continents, in the footsteps of an ever-changing humanity. He has witnessed some of the major events of our recent history; international conflicts, starvation and exodus.

Two people meet and fall in love but have to separate as each one of them faces a dangerous mission: one as a Secret Service agent tracking down suicide bombers, another as a bio-mathematician participating in a deep sea diving project.

In a room with no windows on the eastern coast of Africa, a Scotsman, James More, is held captive by jihadist fighters. Thousands of miles away in the Greenland Sea, Danielle Flinders prepares to dive in a submersible to the ocean floor. In their confines they are drawn back to the Christmas of the previous year, where a chance encounter on a beach in France led to an intense and enduring romance.

Story about a woman who works with the homeless, and a paranoid Vietnam vet who both become interested in the death of a Pakistani man killed in a drive-by shooting, but for totally different reasons.

Fifteen of the world's top directors give a personal view on the nature of time.