Twelve

Tae San and the angels live in disguise among humans. Sa Min discovers O Gwi, who has been sealed away. (Source: Disney+)

Tae San is wracked with guilt over past deaths. O Gwi is revived, and Sa Min ambushes Mirr. (Source: Disney+)

After learning of O Gwi's return, Marok finds his lair through Won Seung. O Gwi vows revenge on Tae San. (Source: Disney+)

Tae San learns O Gwi is back. He and Marok go to the evil spirits' gathering. They target Geum Sun. (Source: Disney+)

O Gwi tries to absorb Mirr's dragon energy and the soul stone. Marok arrives alone to stop them. (Source: Disney+)

With the soul stone's power, Sa Min heals at an incredible speed. Tae San opens the Hellmouth. (Source: Disney+)

In a world of chaos, Tae San and the angels race to save Mirr and stop Samin while O Gwi recovers. (Source: Disney+)

A fierce battle erupts among the angels. Tae San fights Samin, who has absorbed the dragon's soul. (Source: Disney+)