Mouthwashing is a first-person horror experience set aboard a doomed space freighter, chronicling the grim fate of its ill-fated crew. At its core lies the twisted legacy of Captain Curly—once a leader, now a maimed, limbless, and silent figure condemned to watch as his crew slowly perishes. His final act of betrayal has left everyone stranded in a nightmare where hope is as scarce as the dwindling resources.