Uman jumped on an intercepted Osuna communiqué that said one of their prisoners was found to have vital info and would need to have his memories removed for processing. Uman saw this as his chance to bring home the golden goose and get the coveted open seat on the War Council where his father sat as chair.

Uman took a small special ops team on a clawship (dumb name for smaller attack vessels) but was shot down before it got to the prison. On foot they made it in, but barely, as most of his team died in the assault. And when they found Griston, the prisoner with the info, he already has his mind wiped.

Uman tried to make the most out of his mission, by saving some Arakun who were prisoners and hijacking an Osuna cargo ship to get back to his carriership in time to jump to hyperdrive before the Osuna caught up and blew them away.

How does Uman tie into TGS and the Net plots?