When Ben and Mark meet in hospital while undergoing leukaemia treatment, they become inseparable. Their wild boyish pranks on the ward may drive the doctors to distraction but it helps take their minds off their precarious state of health.

Skip forward 20 years and their lives have taken different directions... Mark has forged a successful career as a doctor, while Ben is in a dead-end job with debilitating obsessive tendencies. But they have always maintained their friendship and never fail to meet for their regular catch ups. When Mark receives some shocking news, he's forced to re-evaluate his life and the two men embark on an adventure. As their exploits grow more dramatic, a secret Mark has been hiding comes to light and forces Ben to question everything he knows.