The Quest (or The Hero's Journey)

Story Arc

 * Hero is called to adventure
 * They cross the threshold into the unknown
 * Trials, failures, monsters, temptations, and danger
 * Final battle: the odds seem overwhelming but the hero conquers
 * Hero returns home changed

Also may include:

 * Chosen one
 * Hero initially refuses the call
 * Wise mentor
 * Group of allies accompany hero
 * Eventually he must face the final battle alone

Examples

 * Lord of the Rings
 * Star Wars