Tsukuda Kohei is a former researcher at the Japan Aerospace Exploration Agency. He now runs a factory that his father left behind. Kohei takes part in the domestic rocket development plan Stardust, run by a large Japanese corporation. One day, Kohei suddenly hears that the CEO of that company will be replaced and the Stardust plan will be shut down. Naohiro’s is an employee at Kohei's factory. His father has fallen ill
