“Day of Judgement, Day of Wrath” is episode twenty one of season three of Andromeda.
The Andromeda Ascendant is in dry dock being refitted, and awaiting the launch of a new, more powerful, Systems Commonwealth ship, the Resolution of Hector. Tyr goes off on his own, supposedly to find other members of his pride, but it appears he is actually trying to take control of all the Nietzscheans.
The new AI for the Resolution is based on that of the Wrath of Achilles, encountered in “The Knight, Death & The Devil”, which means that Stargate SG-1‘s Christopher Judge returns. Before the Resolution is launched, Rommie takes control and steals it. It isn’t actually her doing it, but a copy of the AI of the Balance of Judgement, which was destroyed in “Star-Crossed”. Consequently, Christopher Judge is acting across from his Stargate SG-1 colleague, Michael Shanks.
The Balance of Judgement wants to restart the Restorians, and is going to use the Resolution of Hector to do so.