Two Earth children have been transported to Primus and if that's not bad enough, the Monstroid has been unleashed and now She-Ra and He-Man have to defeat the Monstroid and help the kids get back to Earth for Christmas.

Adam and Adora's family goes to Earth for Thanksgiving, but they have to deal with the Brotherhood of the Skull, a secret society that worships Skeletor.

Evil-Lynn has brought back Skeletor as the undead and now She-Ra and He-Man have to defeat him once and for all.

He-Man has learned he has a sister and now she must protect Etheria like He-Man does for Eternia.

Today, Etheria celebrates the coronation of its new king, Zed, the son of former Queen Glimmer of Brightmoon and the Emperor of the Known Universe, Horde Prime. It's the beginning of a new era and everything is perfect in the eyes of Prime. But after eighteen years under the rule of that ruthless leader, Glimmer finally seeks revenge.

Bold of you to assume that there is only one universe. The Best Friend Squad encounter the Adora of another dimension, helping her deal with her world's war with the horde.

An unexpected arrival on Etheria crates problems, opportunities, and a lot of confusion for everyone involved.