A city under the sea? Leave it out.
And that's what the producers have done, along with storylines that make any real sense or characters that come close to believability.
But that doesn't mean it's bad at all. All the leads are good-looking, which gives the show teen appeal.
And of course, when you dip into Greek mythology you have lots of great scary action storylines to work with, a sort of Jason and the Argonauts meets Buffy.
It doesn't matter if Atlantis is bone dry when you've got flying dragons to work with.
Tonight, Jason's hasty actions have dire consequences and he and his friends find themselves at the mercy of King Minos, who declares they become bull-leapers.
To survive they must jump the charging beast - a bit like Pamplona, except death is a virtual certainty.
With their lives on the line, it's up to Jason to pull his motley team together in this ultimate test of bravery.
But watching from the crowds is a dark force, who hopes to turn the favour of the gods against them.
Who is this dark force? How will the producers manage to squeeze as many scantily-clad maidens into each shot? How will Mark Addy convince as Hercules when he looks as though he couldn't hold up a strong argument never mind temple walls?
And where would TV drama be without Sarah Parrish being guaranteed a role?