On a distant planet, Princes Yuki Soleil ascends to the throne of Hariant. By her side is her faithful bodyguard and confidante Joshua. Like most 12 year old monarchs, Yuki struggles with the responsibilities of leadership, even in a kingdom as saccharine as hers. However, rumblings on the border they share with the Empire of Grandiga may bring their idyllic peace crashing down. Also there are mechs.