自命不凡的汽车经纪“士啤呔”与私家侦探“萧珠珠”在咖啡馆邂逅并发生冲突；后来萧珠珠因查出犯罪证据遭到绑架，士啤呔出手相救，两人在欢喜冤家的相处中擦出爱火...
"Spare Tire" is an auto broker who fancies himself a modern-day Valentino capable of winning over any woman. While at a café with Ah Can—the son of the car dealership's owner—he runs into private investigator Xiao Zhuzhu. Eager to show off his charm, he lavishes attention on her, only to be repeatedly teased and humiliated in return. Seeking revenge, he concocts a scheme to trick Zhuzhu into believing she has lost her virginity to him; enraged, she vows to exact serious payback. Meanwhile, while investigating a case of infidelity, Zhuzhu stumbles upon crucial evidence against a criminal syndicate. The organization abducts her to destroy the evidence, but she is fortunately rescued in the nick of time by Spare Tire.
