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Forty-something Cecilia better known as Sissy to her friends is a cheery and vivacious seamstress. Wai Mun, her husband of many years is the captain of an acclaimed Chinese restaurant. Although somewhat discontented with life since his migration from Hong Kong to Singapore, he and Sissy are a loving couple and enjoy a blissful marriage. They have a 15-year-old son and a nine-year-old daughter who has a very close relationship with Sissy and is a source of great cheer and comfort to her. In a twist of fate, an unexpected occurrence befalls their seemingly mediocre and uneventful lives. One day as Sissy feels a hard lump in her left breast. A gush of complex emotions overwhelms her.

倪婕（郑惠玉 饰）和齐欣（林梅娇 饰）是职业自由搏击选手，在一场比赛中，两人正在为了争夺最后的冠军而进行着激烈的角逐。就在这个节骨眼上，齐欣母亲的不幸去世令齐欣失去了斗志，比赛被迫中断，此时的齐欣并不知道，造成母亲死亡的罪魁祸首，竟然就是倪婕的母亲美英。 悲痛的齐欣决定惩奸除恶，做一名警察。机缘巧合之下，她和倪婕再度成为了同事。与此同时，近日来接连发生的女匪打劫事件让市民们陷入了恐慌，两名弱女子对抗强大的黑恶势力，她们有获胜的可能吗？齐欣终于知道了关于母亲之死的真相，愤怒和悲伤中，她决定绝不轻易原谅倪婕和美英。

被法醫發現驚惶失惜呆坐在一棵巍然樹上的小男孩頓時成了一宗謀殺案的唯一目擊證人. 雖然警方的調查一再顯示小男孩的母親嫌疑最大, 但法醫卻深信幕後黑手是一股強大的超自然力量, 尤其當他發覺小男孩與大樹間似乎存在著一段異乎尋常的親密關係......