In Zambneal, the player is told by Major Rodeschild that the next stop is the Proton Kingdom's island neighbour of Nibelia, under blockade by the Q-Stein Navy. The player is ordered to equip himself with ocean drive gears in order to escort the troop carriers through to Nibelia. En route to Nibelia, the Protons are greeted by a mass of Q-Stein destroyers, aircraft carriers, attack jets, and torpedo helicopters. A fierce battle is fought, but the Q-Steins are defeated and Nibelia is liberated. In Nibelia, the player is personally thanked by the Nibelian King himself, and Major Rodeschild gives his congratulations. The player is then given the mission of clearing the way for an invasion of the Q-Stein Empire itself. Still equipped with ocean drive, the player goes to fight the only thing standing in the way of a seaborne invasion: General Skiseava, a massive battleship armed with gun turrets, a CIWS turret, ICBMs, and missile launchers. After killing Skiseava, the way is clear for an invasion.