Just as I was wrapping up the last bit of cleaning

Jared came running into the living room and says..MOM the toilet overflowed! I go in hoping it wasnt so bad but NOPE its bad. I cant even get the water to go down. Jim wont be home for another 2 -3 hours and I am sure he wants to race right home and clean up toilet overflow. UHG I dont even know where to begin. The kids are right now bringing the steam cleaner downstairs and I have most of it from the hall way mopped up. Does anyone want to come help?