Gundam Wing Episode 20

Heero leaves the colony and heads for the moon, telling Duo to take his place in the school until he heals. The scientists are imprisoned on the Moon and Heero plans on killing them so they won't betray "the mission." The scientists themselves are completing two new gundams: Vayeate and Mercurius. Meanwhile Une continues working on getting the colonies to accept OZ, arguing that peace is useless unless it's gained through superior military force.

Back on Earth, Sally Po finds the half destoyed Sandrock and tries to destroy it before OZ can look at it. The Manguanacs interrupt her and she decides that it's okay for them to take it and fix it for Quatre.

Trowa infiltrates OZ and tries out as a pilot. He's readily accepted but Une's right-hand-man, Nikol, suspects Trowa's motives, so Une tells Trowa to blow up Deathscythe, thinking that a gundam pilot wouldn't do it. This, of course, is broadcast all over the colonies and Duo sees it as he walks down a street, which makes him scream. Later, Trowa has a talk with St. Une and tells her he likes OZ's sneaky/dirty tactics. Une looks very confused and is led away by some of her soldiers. Later we see her at her dressing table, holding her glasses and wondering if she's the Lady Une who is a soldier of OZ or the Lady Une who works for "Mr. Treize."

Heero arrives at the Moon Base and get into it, but is caught and arrested by none other than officer Trowa.