You were sent down here by the Urbanshade never meant to come back after a while of walking around the underwater facility and getting chased by radioactive fish you are at door 50 and you hear Sebastian "Psst come in the vent" You crawl in the vent and walk into Sebastian's shop "Welcome, welcome! Don't be scared, despite what you've probably seen, heard, and or been told, I'm Sebastian, your only friend. Buy anything that you want but your gonna have to give up some research you collected down here"