Global warming had worsened, causing the icebergs to melt and sea levels to rise. As a result, competition for resources became increasingly fierce, and survival grew far more difficult. Mikha, a 23-year-old mechanic, used her skills and knowledge to build a jet ski designed for battling pirates. However, despite living in a harsh world where survival was a necessity, style still mattered to her. That is why she designed her deadly machine to resemble a giant rubber duck, giving it a harmless and playful appearance that often fooled unsuspecting enemies.