Tsai-hsiang and Yi-ge are a happily married couple. Unexpectedly, when Tsai-hsiang’s mother-in-law suddenly returns from distant Argentina, she is instantly transformed from a mother-in-law to a daughter-in-law, leading to new challenges between the two roles. At Hsiao-ou’s and Fa-gui’s wedding, a woman raises her hand in objection, and it turns out to be Fa-gui’s wife. Can the two of them continue to stay together? When Da-mei and Bing-ren finally have a child, it turns out to be a brown-haired, blue-eyed mixed-race kid; the question arises: who was unfaithful? Can Bing-hsiao make good use of his golden tongue in the cutthroat drama over orchids, ensuring that orchids bloom profusely and contributing to Taiwan’s reputation as the “Orchid Kingdom”?
彩香與一哥成為相知相惜的老伴,豈料遠在阿根廷的一婆突然歸來,彩香頓時從婆婆變成媳婦,新的婆媳問題再度上演。小鷗和發貴的婚禮上有一女子舉手反對,竟然是發貴的妻子,兩人能否繼續下去?大美與秉仁終於開花結果,孩子卻是個褐髮碧眼的混血兒,到底誰才是對婚姻不忠的人?而秉孝又能否贏得蘭花開滿園,不負台灣「蘭花王國」的美名?