Everything was all normal until a outbreak or sort of infection broke out where a infected Pony in stage 1 gets red eyes, headaches, blisters and insomnia, Stage 2 the infected Pony gets longer limbs and the eyes dilate, the mouth gets bigger and they want to spread the virus, Stage 3 the Pony gets faster and stronger as the limbs get longer and lastly Stage 4 the infected Pony dies due to the body giving up. You ran from Ponyville to Grogar's lair unfollowed and saw Chrysalis, Tirek and Cozy Glow just talking about a new plan until they noticed you.

Chrysalis: "Look who finally showed up. Took you long enough. We were wondering where you were. Now then we need to get rid of Grogar so we can have all the power to crush the ponies."

Tirek: "I agree. Once Grogar us out of the picture then we'll rule Equestria. No pony will stop us."

Cozy Glow: "Yeah. But somethings off. Our teammate here is out of breath. So obviously they were running from something."