Albedo was asked to finish a painting but when he got to the house...

he saw the painter die

then he woke up in a dark room and a single painting of a girl with a blue flower in her hair

after being told he had to paint everything to her liking or he would be killed, he kinda had no choice

but he found a phone full of clues from the other painter

he messed up and he was back to day one

he painted a apple he had to paint a knife for you to use to peel it