Earth Union controls a large part of outer space. Suddenly, the connection with some of its stations is aborted and there are rumors of enemy ships approaching. Only the captain of the elite fleet Libera Wing can save the people from destruction. Become the captain of Libera Wing and save Earth Union from destruction in this tower- defense-style action-strategy game. Your objective is to combine the right strategy, item usage and abilities of your command ship. There are 36 story levels and 24 quick-play levels waiting for you.