The chefs are tired and grumpy as shift number seven begins, but they're more determined than ever to get to the final shift and have a chance at winning $75,000. Co-hosts Michael Symon and Esther Choi present the first challenge, which features a three-way battle in spicy street food. Next, it's math time as the chefs must do some measurement calculations after being up for 19 hours! Then, the competitors make a finale-worthy fish dish for judge Andrew Zimmern to earn a spot in the final shift.