A thunderstorm is happening and Martin Luther doesn't want to be killed so he prays to God but it isn’t God it's St. Anne and she says that if he lives he has to devote his life to God.
Martin does live and as he promised he becomes a monk (someone who has devoted their life to God)
The 95 theses are complaints in a way about Christianity (well things that Martin found wrong with it) and the reason he made this is because people who have sinned and where poor had to pay money to not go to hell.
Because Martin put up those 95 theses after a little while finally got some notice and people didn't realize he had a printing press so he was able to share with everyone about what was going on and he started to sell indulgence.
When the bible first came out it made people have arguments about all sorts of things.Some go to war because that’s how they would decide who did what.
Because Martin shared his thoughts with everyone else he made the two Christianity churches split into two. Protestant and Catholic church.