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十年前，唐拾一（郑嘉颖 饰）醉心泰拳，与师兄高伟廷（黄德斌 饰）赴泰国习拳，为了赚快钱打黑市拳，犯下令他痛苦一生的错误。他自此退出拳坛，销声匿迹，回港后在一家体育用品公司当保安。同公司的毕家成（黄浩然 饰）因一次意外事件对泰拳产生兴趣，他与唐拾一有过冲突，矛盾化解后，他得知唐拾一曾经是一个拳手。在多方努力下，唐拾一与当年的同门手足相认，渐渐走出阴影。 毕家成对泰拳充满了冲劲，报名参加了新秀赛，这股斗志感染了唐拾一。唐拾一当年的仇家从泰国来到香港，向他撂下了挑战书。唐拾一是否应战，从此走出折磨他多年的伤痛，重返拳馆？毕家成是否能在唐拾一的指导下，成为新一代拳王？
Inside the warehouse of Tsuda Enterprise, everybody is busy preparing for the upcoming sports footwear launch party.
SHING is totally mesmerized by the fight between TING and YAT on the boxing stage.
LUNG and YAT have finally resolved their long-running misunderstanding and made up with each other.
Having witnessed how LIK has won the match, SHING gets inspired and is resolved to pursue his boxing dream.
SOMCHAI has finally found YAT and even challenged him to a duel.
The Office Operations Unit of Tsuda Enterprise has been dissolved, following which SHING is transferred to the Sales Department and becomes so stressed about the new working environment.
YAT needs SHING to apologize to TING.
Knowing that TING has intentionally misled him and caused his failure in the tournament, SHING is consumed with rage and asks the man for an explanation at once.
Upon returning from Thailand, YAT goes to see TING and asks him how he bribed CHATCHAI’s assistant years ago only for his own sake.
FAN bashes YAT for being too useless to be a father, and proposes taking GAT to Canada so that the boy will have a better upbringing.
Impressed and inspired by SHING’s passionate performance on the boxing stage, YAT finally decides to follow his heart and accepts the post of Boxing Trainer with the Dragon Boxing Gym.
In need of an outlet to express her affection for YAT, FAI finally decides to share her feelings in a phone-in radio show.
SANG is knocked down by a car and slips into a coma.
LUNG decides to bring SANG to an eminent medical specialist in Beijing for treatment, and is going to entrust the Dragon Boxing Gym to CHEUNG during his stay in China.
With LAM’s assistance, some significant new clues have emerged and the charge against LIK is finally dismissed.
YAT finally gives in to his feelings and admits his love for FAI.
It has been a year since CHEUNG left the Dragon Boxing Gym.
FAI forgets to pay for her shopping in the supermarket and almost gets caught on the spot.
Knowing that his daughter has been maltreated by WAH, FAI’s father, KAM-WING, tries to get FAI to divorce WAH, but to no avail.
At WING’s request, YAT tries to convince FAI to reveal the truth to the police, but FAI insists that it is she who has caused WAH’s death.
