Food journalist Lu Zhiwei can tell the slightest difference with the tip of his tongue. During an ordinary night market visit, the "flavor decoder" in her hand alarmed frantically in front of the "Deep Sea Fish Balls" stall. Under the intoxicated expressions of the diners, the coating on their tongues changed quietly. With the help of the "Food Genealogy Tracker" left behind by his mentor Gu Yanzhang, Lu Zhiwei discovered that the fish balls actually carried an unexplained "active factor", and the source pointed to a sea shrouded in fog. She must race against time to use special "cold brew purification technology" to neutralize the dangerous "umami anchor point" before the delicious food turns into a disaster. At the same time, she must expose the greedy conspiracy of the catering giant "Xianyu Group" to use this taboo taste to concoct the "Ultimate Xianyu". However, this taste from the abyss is actually the key to awaken numb taste buds... Lu Zhiwei walks on the edge of danger and salvation, vowing to redefine the safe boundary of the word "fresh" in this bizarre urban food world.
