After the companions that Cadmus sent were killed, he had to slay the dragon alone. Cadmus has proven his worth in the Inmost Cave by avenging his friends.
Approach the Inmost Cave:
The Supreme Ordeal
Cadmus must slay the dragon and complete the sacrifice of the cow to Athena.
Cadmus is told by Athena to take the teeth of the dragon and plant them. From the soil appeared a group of aggressive warriors, who began fighting each other until there were five left.Those five made peace and helped Cadmus build the city of Cadmea.
The Road Back
After killing Ares's dragon, Cadmus was under slavery for years under Ares. When the term of bondage ended, Cadmus built the great citadel with the Spartoi.
Cadmus eventually marries Harmonia, the daughter of Ares, after Ares forgives Cadmus. Together, Cadmus and Harmonia have four daughters and one son.
Restoring the World
Cadmus learned to perservere through his problems. His world is a better place.