Taltarum is a person who was playing a video game called World of Warcraft. In the game, Taltarum bought something called a "mount," which is basically a special animal that they can ride around on.
However, Taltarum's account was hacked, which means someone else took control of it without their permission. The hacker took the mount away from Taltarum and sold it to someone else in the game.
Taltarum was upset because they had paid real money for the mount and now they didn't have it anymore. So, they decided to sue the hacker and the person who bought the mount from them for the value of the mount.
The court had to decide if Taltarum really owned the mount and if the hacker and the buyer had done something wrong. In the end, the court decided that Taltarum did legally own the mount and that the hacker and the buyer had to give it back to them and give them some money for the trouble.
So, it's like if you had a toy that someone else took without asking, and you asked a grown-up to help you get it back and make the other person say sorry.