Adventure fiction is a type of fiction in which an adventure forms the main storyline. The adventure is usually an exciting undertaking involving risk and physical danger. Author Malins describes adventure fiction as the story "of the hero—individual or group—overcoming obstacles and dangers and accomplishing some important and moral mission." The characters in an adventure fiction are highly sympathetic. They are also ones the reader can easily relate to. There has to be a conflict to overcome and a clever villain to stop.