His brothers came across Egyptian travellers and sold Joe to work for them as a slave.
When Joe worked as a slave, he worked for a really important guy names Potiphar, Potiphar liked Joe a lot so he put him in charge of the house.
Joe helped figure out what Pharaoh's dream meant... it was a nightmare about how the people would have food for 7 years, then they would have no food for 7 years. Jose helped Pharaoh figure out how to solve this problem