10 Sci-Fi Movies With Unexpectedly Ridiculous Plot Twists

10. H20 Saves The Day - Signs

You're likely more than aware of the fact that not all M. Night Shyamalan plot twists are equal, sadly. And for every Unbreakable swerve and jaw-dropping The Sixth Sense deathly reveal, there is sadly a laughable H20 Achilles heel just waiting to leave you scratching your head.

After spending an entire film watching the Hess family anxiously trying to figure out what in the holy hell is going to happen to their world now that aliens have apparently decided to call it their own, it's revealed pretty late in the day that these terrifying extra terrestrials weren't actually the biggest fans of water.

So, these super advanced beings from outer space didn't think to double-check whether or not their destination was mostly made up of a substance that was highly lethal to them? Right...

And what do you know? Father Graham Hess' daughter being so strangely obsessed with leaving glasses of the transparent liquid around the house ended up coming in rather handy as his brother Merrill began swinging at an alien creature invading their home. Fancy that.

After such an intriguing build up, it's safe to say Shyamalan's feature well and truly drowned with this sloppy, damp squib of an ending.