Chef Robert Irvine heads to Lebanon, N.H. to help husband and wife team Nick and Maria save their six-year-old Mexican restaurant, Gusanoz. Locals flocked to Gusanoz to taste Maria's authentic Mexican food; but growing pains got the best of the restaurant, which suffered in food and operations quality, leaving a huge, expensive mess for Robert to clean up. Can Robert and his team give Gusanoz a new life -- and Maria a renewed passion for her business?