Season four starts in Los Angeles, under the Hollywood sign, where host and chef Tyler Florence greets the eight teams fighting for their chance to win the grand prize of $50,000 and their own food truck! For the first challenge, the teams must go hi... (more)gh class, selling one signature dish in Beverly Hills, Calif., but that dish must be sold for at least $20. The second challenge takes place in San Francisco, where they teams can only sell a NEW signature dish. The team to sell the least amount with their two signature dishes is sent home.