Tirek has won, Equestria is in danger, the ponies are terrified. The god of light Primus cannot ignore this. Help is on the way. His sons will put an end to Tireka tyranny.

(Let me clarify. The fight with Tirek is only one arc. After it, events from the original series will follow with some branches from the plot. In short, it will be shown how the Primes interact with ponies and other living creatures in Equestria)