Imaginaerum tells the story of an aged composer, Tom, who suffers from extreme dementia. As he has had the illness for years and has regressed into childhood, he remembers virtually nothing from his grownup life. His music, pals, all his previous together with the reminiscence of his daughter are a blur in his fragile thoughts. All he has left is the creativeness of a ten 12 months outdated boy. As he drifts away into coma, it appears unimaginable to get again what he has misplaced. Or is it?