S1, F4: Ke-ai takes on Mr. Jiang's challenge to hit five million sales a month despite knowing that it's an impossible mission. At that juncture, the board of directors' strenuous opposition and the conflict among the promoters almost causes Yin-yin, the store manager to suffer a miscarriage. On the other hand, the chairman of Daily Market, Mr. Tiger intends to increase the rent and subsequently trigger the battle between the market and triad. The duo develops unique feelings for each other after being confronted by challenges that come one after another.