It takes a while for Part Two of the Mantis Morlo story to start. After the splash page, there’s a page of recap of the last issue, then the first actual page of news story just repeats the story elements already shown on the splash page. The Legionnaires, were left in battle with the Chemoids at the end of last issue, and they weren’t doing well.
Now they trade Chemoids, and their powers work well when used against a Chemoid who was adapted for one of their teammates. That suggests that the Chemoids are not as versatile as Morlo claimed, or maybe they just don’t adapt quickly enough to handle multiple opponents. Superboy takes out the smog generator that was endangering Orando. The mission is accomplished, but Morlo escapes, jumping off a flying platform and vanishing utterly.