Hello again, and thanks for uploading the Pink Merhog and the Blue Naga story! Remember the original story of how we meet Shadow after Maria sacrificed herself in order to get him out of the ARK? Well, how about a reference to that scene for the climax?
— Quick summary: after the submarine is built, and the crew goes underwater with Amy and Maria swimming in merhog forms, they unlock the door to the underwater cave, but cannot get through a gold door into the pirates' hideout. However, Whisker, being extremely dim-witted, inadvertently tells them that they must align the symbols on the door and that there are three markers on separate islands giving clues as to do this; but when the pirate leaves, Scourge attacks the gang and takes Maria prisoner when she sacrifices herself to save Shadow. Determined to get her back, he and Sonic collect more Materials, and after finding the three markers on hidden islands, Sonic, Tails, and Blaze tell Marine to stay at Southern Island, as the upcoming battle with the pirates will be more dangerous than any challenge they've faced so far. Marine insists that she goes with them, and finally losing patience with her, Shadow and Blaze yell at her, calling her a nuisance.