What episode is Gauss Altman's shrinking rescue team?

It is one of the episodes of 18 and 19. It's about Gigi immigrating to the earth and doing experiments on people as white rats. Musashi was restored and entered the conveyor. It's been a long time, and I can't remember it clearly. The disc I bought was two episodes, in the ninth disc, so it was one episode of 18 and one episode of 19, and the other episode was about ghosts. Thank you.