The young Harold lives in his own world of suicide-attempts and funeral visits to avoid the misery of his current family and home environment. Harold meets an 80-year-old woman named Maude who also lives in her own world yet one in which she is having the time of her life. When the two opposites meet they realize that their differences don’t matter and they become best friends and love each other.

Armed with a purple crayon and a powerful imagination, curious toddler Harold draws himself a world of adventure from the comfort of his bed and back again. Based on the books by Crockett Johnson.

Harold Mortimer is the last of his clan. The old dilapidated castle is all he has left and he urgently needs money for renovation. Until now, he earned his living from tourists. But the ghosts, once helpful in scaring the numerous clientele, are staying away, because the whisky cellar is empty. Without ghosts, there are no tourists, no money, no renovation, no whishy, no ghosts.... a vicious circle. Enraged, he decides to get rid of the ghosts once and for all and chases them back to the graveyard where they once came from. There he meets the cemetery gardener Paolo. The two quickly become friends and decide to go to Spain together. Paaolo even owns a boat... But how will he make it to the sea? Can the enchanted fairy help them?

Inside of his book, adventurous Harold can make anything come to life simply by drawing it. After he grows up and draws himself off the book’s pages and into the physical world, Harold finds he has a lot to learn about real life - and that his trusty purple crayon may set off more hilarious hijinks than he thought possible. When the power of unlimited imagination falls into the wrong hands, it will take all of Harold and his friends’ creativity to save both the real world and his own.