"Plankton has taken over the lost city of Atlantis and marked the way there with a bunch of black flags so every greedy goon in the ocean can follow and join his unstoppable army!
Help SpongeBob and Patrick to get to Atlantis by defeating Plankton's army."
There is an error on the first stage on Map 3 where instead of the actual stage loading, an unbeatable stage will load where the entire stage is flat and the only obstacles are various Sandy and Squidward NPCs serving as walls and the goal is located on the very lower right-end of the stage, blocked by rocks and NPCs. Several Planktons with 150 health, 30 shield, and 35 attack are stuck but can attack with ranged attacks. This virtually makes the game unwinnable.
This can be fixed by going through the game's installation folder then enter through the "maps" folder then deleting "ship_graveyard_1.xml" and removing the last "_" on "ship_graveyard_1_.xml."