How to restart the scene in Unity after the character falls into the abyss?

Question

Unity

I'm making a platformer in Unity. I had a problem during development, I created an empty object in the abyss, so that when the character fell into it, the scene restarted. In words, everything is easy, but in life I can’t write a script.

Answer 1

Loading the scene here
Collisions and colliders
You will find all the functions you need there.

Answer 2

Everything is in the documentation.