Fortunately, one of the plumbers noticed the similarities in the obscure language to the old stories their grandmother used to tell them back in Ireland, and was able to piece together the Gaelic well enough using Google Translate that the plans were decoded after only a fortnight
Unfortunately, Dagon was better at Fortnite than them. While they were busy devoloping strategies to defeat him in Fortnite, he was busy devoloping strategies to defeat them in water systems
Fortunately, Dagon had recently put out an ad in Craigslist and the local Innsmouth newspaper want ads for allies to his future Quagmire and had several job openings.
Unfortunately, when this game begins to drift away from it's strict basic premise and member start chooing sides, it gets wildly convulated and one has to keep track of 2 overpowered gender-fluid cat deities and the personification of Morgan Freeman
Fortunately, Davy Jones trapped Dagon in his locker and returned the seas to their natural state though the damages to shorelines and island nations was great.
Fortunately (?) this universal reset inadvertently brought into existence a pantheon of godlike hamsters with a weakness for pineapple pizza and saccharine soap operas.