A monstrous tidal has left the luxury liner Poseidon capsized mid-ocean and its few survivors struggling to reach safety in an upside-down world. But 'The Poseidon Adventure' was only the thrilling start. You must go 'Beyond the Poseidon Adventur'e to complete the white-knuckle suspense. Under producer/director Irwin Allen, Michael Caine and Sally Field head an all-star cast caught in the crippled craft's flaming corridors and bursting bulwarks. Tug skipper Caine, first mate Karl Malden and passenger Field enter the foundering vessel hoping for salvage rights, miraclulously finding more survivors. But others have come aboard, led by sinister Dr. Stefan Svevo (Telly Savalas). He wants a priceless cargo of plutonium - and will kill for his plunder!