Episode Title:
I'd Never Allow That to Happen.
Episode Description:
As a witch appears before Kyöko, Homura arrives and uses her time manipulation to help Kyöko escape, bringing Sayaka's body to Madoka. Homura reveals that the witch was actually Sayaka, whose Soul Gem had transformed into a Grief Seed as a result of becoming too tainted with despair. Later that night Kyubey appears before Madoka again explaining that his race, known as Incubators, choose girls in their teens and raise them to become witches in order to obtain powerful energy from the transition from hope to despair in an effort to prevent the heat death of the universe...
