The ninth life

At the beginning of the 19th century, three painters are held hostage in a Bavarian castle by the evil Count Grau. They are forced to see the world through the eyes of fish, reptiles and birds, in other colors, some unknown until then, and to paint using those colors. This changes their way of being, in the conditions in which they have to fight against a plot that threatens the world. Is there love? For what reasons should life be lived?