Infinite Ryvius (us) season 1 Episode 11 When the Party's Over ( Air Date 1999-12-15 ) Genre Action & Adventure, Animation, Sci-Fi & Fantasy category. Overview "Following the Ryvius' successful battle in Mars orbit, the crew decides to throw a party to celebrate and boost morale. But during the party, a terrible thing is learned by the students aboard the Ryvius.".