Super Short Summary

In present-day England, Conor O'Malley is visited by a monster, a yew tree that transforms into a humanoid, while he struggles to cope with his mother's illness and bullying at school. The monster tells Conor three tales, and in return, Conor must share his haunting nightmare. As his mother’s condition deteriorates, the monster helps Conor confront his deepest fears and emotions. The novel addresses themes of terminal illness, grief, and loss.