Galactic Blasters D2: Brilliant Supernova

In 2046, just after Codename STEP was neutralized by the H.D.E., enormous enemy fleets appear heading for Mars. The H.D.E. leader dispatches three operatives to investigate. The deeper they go into Mars, the larger the scope of what they are uncovering becomes — and at its center is something called a Hyper Supernova.