The Rise of a Villain ~Harley Quinn~

Our hero is a rather clever guy who invented a revolutionary substance, thus making a breakthrough in medicine and not only, unfortunately (or fortunately) about his discovery was learnt and interested in people who see their own use for this substance. And not having time to share his discovery with the world, the guy experienced a series of events that led him to a VIP room in Arkham Asylum with a diagnosis of amnesia, now he must remember what happened to him. And in this he will be helped...