You take the money to the nearest police station. Immediately, the police recognise it as being money from the drugs mafia.
Unfortunately, after asking you a few questions, the police start to believe you are part of the drugs mafia and you are trying to pull some sort of trick. They arrest you, and because they are anxious for convictions against drugs criminals, they fabricate evidence against you.
At your trial, you are found guilty and sentenced to 20 years in prison.
In prison, you find there are other drugs mafia convicts, and it was their money that you took to the police. They get their revenge on you by attacking you at every opportunity. You are beaten up in the showers, in your cell, and in the exercise yard, and the prison guards do nothing to protect you. Life starts to get unbearable.
Learn karate from a prison library book