A hero ventures forth from the world of common day into a region of supernatural wonder: fabulous forces are there encountered and a decisive victory is won: the hero comes back from this mysterious adventure with the power to bestow boons on his fellow man.Here is the diagram, and see below for more details about Campbell's scheme:
Campbell's 17 Stages:
Departure
1. The Call to Adventure
2. Refusal of the Call
3. Supernatural Aid
4. Crossing the First Threshold
5. Belly of the Whale
Initiation
1. The Road of Trials
2. The Meeting with the Goddess
3. Woman as Temptress
4. Atonement with the Father
5. Apotheosis
6. The Ultimate Boon
Return
1. Refusal of the Return
2. The Magic Flight
3. Rescue from Without
4. The Crossing of the Return Threshold
5. Master of Two Worlds
6. Freedom to Live