In Beyond the Poseidon Adventure, a group of survivors from the original disaster attempt to salvage the ship and uncover a hidden treasure. Along the way, they encounter various obstacles including terrorists, machine guns, and a race against time to rescue a blind woman trapped on board. The group must navigate through flooding, storms at sea, and a tidal wave in order to survive and complete their mission.

The Poseidon Adventure is a gripping disaster film set on a luxury ocean liner that capsizes after being hit by a massive tidal wave on New Year's Eve. A group of passengers, including a determined reverend, a former prostitute, and a young boy, must navigate through treacherous obstacles and rising waters to reach safety. As they struggle to survive, tensions rise, relationships are tested, and the characters must confront their fears and make sacrifices to stay alive.