You are a quack doctor stuck in a backwater village in the 16th century.
The illnesses of the peasants are varied: neighbor's kid always covered in bruises, the blacksmith complains about his sight, and the priest has stopped praying at all and does not leave the house.
Well, what can you do? At first, your methods are scarce - drain blood, amputate a rotten finger. But over time, you become increasingly sophisticated, learning therapeutic treatments and surgical skills. Eventually, you face the horror of black death and put on a plague doctor mask.