The beautiful warrior woman Xena was intent on securing complete control of the region of Arcadia. To accomplish her goal, Xena decided that Hercules must die. She posed as a maiden in distress and effectively lured Iolaus away from his best friend. Xena then used all her beauty and charm on Iolaus, even preying on his loneliness. Hercules discovered Xena's true identity and went to rescue Iolaus. At first, Iolaus turned on Hercules rather than join him. But eventually Iolaus realized the truth. He and hercules fought Xena and her army until Iolaus was injured. Xena departed, vowing a vengeful return.

"Unchained Heart" is the 13th episode and season finale of the first season of the television series Hercules: The Legendary Journeys. Written by John Schulian and directed by Bruce Seth Green, it first aired in the United States on May 8, 1995.

Deric, a centaur, and his human wife, Lyla and their son, Kefor are being persecuted because she married a centaur. When Lyla is killed, Deric takes revenge on the people and kills two men in self defense. Hercules fights alongside Deric against the prejudice of the local people.

Echidna, the self-proclaimed "Mother of All Monsters", is out to get revenge on Hercules for killing all of her children.