In a post-apocalyptic 1950's, The Fitzroy Hotel - a derelict submarine - is your last resort for a traditional summer holiday. Crammed like sardines into a rusting tin can, the oddball residents of The Fitzroy spend their days bickering and scheming. It is left to Bernard - the hotel's hapless bellboy - to keep the peace. But when he falls in love with the scheming femme-fatal Sonya, he is drawn into a web of lies, backstabbing, and murder. As his beloved hotel crumbles around him, Bernard scrambles to save them all from drowning in their own mayhem.