Try Hard, Coby! Coby and Helmeppo's Struggles in the Marines!

Coby and Helmeppo have enlisted into the navy as odd-jobbers. Coby works hard towards his goal of becoming an officer. They get into an argument about whether it is possible, which escalates into a struggle, during which they accidentally fire a cannon, destroying a whole building. Later they are taken along on a trip to turn over Helmeppo's father, the former navy captain, "Axe-Hand" Morgan, to Vice-Admiral Garp to stand trial for his crimes. While receiving the prisoner, Garp falls asleep. Morgan slashes the admiral's chest, takes Helmeppo hostage, and, stealing a boat, makes a run for his life. The marines are about to fire at them when Coby steps in front of the cannon. He pleads for his friend's life and jumps into the water to swim after them. Impressed with Coby risking dismissal from the navy and thus his dream, Helmeppo stands up to his father. Coby arrives and they fight him together. Eventually Morgan throws them overboard. Garp, who witnessed their struggle decides to take them with him to the navy headquarters.