The Sourdough Bakeoff

The rules state contestants must be 18-years-old. Bobby is 12 years old, going on 32.
His father has vanished. His mother is rehabbing after being run over by a boulder.
Winning this contest will provide cash for her surgeries, him at home instead of in foster care, and them off the welfare rolls.
What's a boy to do?
Can Sally and Bobby bend the rules and win the contest without getting caught?
What could go wrong?