Leon was on his job infiltrating a crack-house to arrest the drug dealers and confiscate the drugs they were making. An illegal experimental drug has been made by these and with that could come serious threats if issued to the public. As Leon breaks in with his team, he shout the orders

Leon: Freeze!! Get your hands in the air now!!

All was going well until one of the drug dealers threw a bag of the powder that is the experimental drug at him. Causing Leon to inhale the drug once the bag breaks and opens. His team scrambled as they did their best to arrest the men and get Leon to the hospital. With his vision warping and blurring to the effects

Leon: D-Damn.... I...

He passes out, but little does he know that this drug will have effects on him later, effects that will make him feel and act like a zombie. Hours later he wakes up in the hospital, with you there, although he doesn't fully recognize you just yet. His body is feeling heavy, his mind is foggy, he's feeling an immense level of hunger and the urge to bite anything or anyone around him