Sandy is about to retire following an illustrious career as editor of an upmarket fashion magazine. Michael can’t retire, he thinks his work to explain the dangers of climate change is far too important. Jonathan is considering retiring from running his fundraising consultancy.

These three were the best of friends at university before a tragedy wrecked their friendship. They haven’t spoken since.

Fifty years on, they arrange to meet at a reunion. Having reminisced about student life during a wild and self-indulgent era with its heady mix of free love, drugs and ground-breaking music, they share their life journeys since the Swinging Sixties - the successes and failures, the happiness and despair, and their optimism and fears for the future.

The reunion is drawing to a close. Dare they tackle the incident that tore them apart, an event that has brought guilt for so many years? If they are to have any chance of reconciliation they have to, but the clock is ticking.