Adora and her Princesses of Power have been working hard to keep Etheria safe from the clutches of the Horde. At the end of last season, it seemed like they were on the right track—but, as we see in the debut trailer for season three of She-Ra and the Princesses of Power, Hordak’s plan has only just begun.
Source: io9 – It’s a Long Kiss Goodnight for Adora in the She-Ra Season 3 Trailer