You teleport yourself from your current location to any place within the cast range, and reach the destination accurately. The destination of the spell can be an imaginable place you can see, or a place specified by distance and direction, such as “straight down 200 feet”, “northwest up 45 degrees 300 feet”.
Dimension Door 5e
Classes: Wizard, Bard, Sorcerer, Warlock
Casting Time: 1 Action
Range: 500 feet
When teleporting, your belongings cannot exceed your load. You can also bring a voluntary creature, and its size cannot be larger than you, and his belongings cannot exceed its weight. The creature must be within 5 feet of you when you cast the spell.
If your destination is already occupied by creatures or objects, you and any creatures teleporting with you will take 4d6 points of force damage and the spell teleportation will fail.