The Star in the Aeris System is showing some unusual activity which has never been seen before. The scientists at the Aeris colony predict that the star is going to let off a massive solar eruption which could last several hours. However there is a problem. The Aeris colony is directly in the predicted path of the eruption, and the power is enough to scorch the planet and potentially burn off the atmosphere.

The USS Ermiana is therefore dispatched to the Aeris system. Captain Misaka and her crew need to find a way to protect the colony and the thirty thousand lives that reside there.