Watch the Trailer!
A lack of the scientific method causes a medical failure that could still be cleared up with just a simple conversation. Yes, the MCU has their own idiot plot now.
So basically, Michael Morbius has a rare, but vaguely proclaimed, bone/muscle disease that gives him and his bestie "Milo" (played by Matt Smith) a ticking clock of death that requires him to create a remedy that he alone can test on himself. I think I've heard of that before. Maybe from Robert Louise Stevenson. Anyways, he takes the potion and becomes a vampire-bat-man. Not a vampire. A man who is also a vampire bat. Milo sees his powers and decides to join him, but eats too many people so they have to fight.