Complex sentence: Son of Vulcan investigated the cause of the war and met Harmonia, daughter of the Greek god Ares, who was also investigating it, and they learned the war was part of a plan by the sorceress Circe to gain absolute divine power.
Split into simpler sentences: Son of Vulcan investigated the cause of the war, and met Harmonia, daughter of the Greek god Ares, who was also investigating it. They learned the war was part of a plan by the sorceress Circe to gain absolute divine power.