A father of the bride (Eamonn Hunt), usually a teetotaler, gets drunk to cope with the anxiety of delivering his reception speech, because he has a stutter. Mayhem ensues, and the wedding party, including the best man (Cillian Murphy), try to do damage control.

Searching for the lost world of Atlantis, Prof. Aitken, his son Charles and Greg Collinson are betrayed by the crew of their expedition's ship, attracted by the fabulous treasures of Atlantis. The diving bell disabled, a deep sea monster attacks the boat. They are all dragged to the bottom of the sea where they meet the inhabitants of the lost continent, an advanced alien race that makes sailors their slaves.