Gregory has a decent job and a sort-of girlfriend, but he lives at home with his Dad. When an alarming physical condition leaves him incapacitated he takes advice from a series of self-help experts: a life coach, a GP, a healer and a dating expert.
Mr Rainbow fuses elements of drama with real voices and is inspired by The Metamorphosis by Franz Kafka. Part of Radio 3's series "In the Shadow of Kafka" exploring the enduring power of the writer's work.