Basement Mech Fights Alien Invaders 07

Genius scientist Nate Kane is arrested for treason after refusing to use his fusion tech for weapons. When aliens invade Earth, he escapes and builds a prototype mech in his basement lab with assistant Lana. He finds the invasion is led by his ex-colleague Rory. Nate upgrades his mech, raises a defense force, kills Rory and the alien leader, and repels the invasion.