– There is a hole

The wormhole, which has nothing to with any worm, but do have a hole is the beloved theoretical concept of space movies. The concept is instead of travelling the whole distance by making it constant and varying the time, the scientists bring both the ends of the distance close to each other. The bright side is that this method is a real time-saver which in fact is a fuel saver ultimately leading to be the most economical mode of transport. The not so bright side is that the things never happen the way you want them to be. By changing the time factor, the things go accordingly haywire. People can lose their mind, you can enter a new dimension or the best one, you open the doors of hell. Moral of the story- never ever take shortcuts. Movies like Interstellar, Star Trek series, Déjà vu, Event Horizon falls under this category.