The K2 (Korean: 더 케이투) is a 2016 South Korean television series starring Ji Chang-wook, Song Yoon-ah, Im Yoon-ah and Jo Sung-ha . It premiered on tvN every Friday and Saturday at 20:00 (KST) from September 23 to November 12, 2016 for 16 episodes.
Plot Kim Je-ha is a former mercenary soldier for the PMC Blackstone. While in Iraq, Je-ha is framed for the murder of his lover Raniya, a civilian, and becomes a fugitive. Je-ha escapes and returns to South Korea, where he is offered work as a bodyguard by Choi Yoo-jin, the owner of JSS Security Company and wife of presidential candidate Jang Se-joon. Je-ha accepts the job in exchange for resources that he needs to exact revenge on Jang's rival presidential candidate, Park Kwan-soo, the man who Je-ha witnessed ordering Raniya's killing. Je-ha is assigned to guard Go An-na, Jang Se-joon's secret daughter, as An-na's life is always threatened because of her stepmother Yoo-jin. An-na, who has been a recluse and lonely all her life, starts relying on Je-ha, who shows concern for her and protects her. They slowly fall in love, causing Je-ha to be torn between having to work with his boss Yoo-jin to exact revenge on Park Kwan-soo and protecting An-na against the wishes of Yoo-jin. Another key figure is Choi Sung-won, Choi Yoo-jin's half brother and the son of her father's mistress and eventual second wife, who is his half-sister's fierce rival. Plotting with Park Kwan-soo, Sung-won eventually causes the deaths of Jang Se-joon and Choi Yoo-jin but later pays for this with his life at the hands of Choi Yoo-jin's devoted assistant Kim Dong-mi. Park hangs himself for his atrocious acts and Je-ha finally proves his innocence and achieves his goal of revenge. Je-ha and An-na leave for a foreign country and embrace each other. An-na asks Je-ha for his real name, but the credits roll before Je-ha reveals it.
Cast
Main Ji Chang-wook as Kim Je-ha / K2 Choi Seung-hoon as young Kim Je-ha The main protagonist of the series. He is a former South Korean special forces and Blackstone military operative who had been stationed in Iraq until he flees South Korea after being framed for murder. His skills come to the attention of Choi Yoo-jin, who hires him to work for her security agency JSS Security under the codename K2, and is assigned as bodyguard to Go An-na, the secret illegitimate daughter of Choi's husband, Jang Se-joon. The name "Kim Je-ha" is not Je-ha's real name but an alias he uses to conceal his identity while working as An-na's bodyguard; the name actually belongs to a victim of an unsolved missing person case. The real name of the protagonist is unknown throughout the show, except that his real surname is said to be Kim. Song Yoon-ah as Choi Yoo-jin She is the wife of Jang Se-joon. The eldest daughter of a chaebol family, she was disinherited from the JB Group conglomerate as her father disapproved of a politician as a son-in-law, although she received control of JSS Security. Ambitious and merciless, her corrupt nature is due to the result of her upbringing. She sets her sights on becoming the First Lady and is willing to manipulate An-na and her husband to further her aims. As the series progresses, she begins to develop feelings for Je-ha after he rescues her from an exploding car. Im Yoon-ah as Go An-na or Anna Lee Yoo-joo as young Go An-na She is the illegitimate daughter of Jang Se-joon who is kept hidden from the public to protect his political career. After her father's affair was discovered, An-na was exiled from Korea and grew up in Spain at a convent, under the constant surveillance of her cruel stepmother Choi Yoo-jin. An-na has developed a social phobia and experiences panic attacks from flashing lights, a result of PTSD stemming from her past connection to the death of her biological mother. She returns to South Korea from Barcelona and becomes a pawn in her stepmother's plan to control her husband's political career from behind-the-scenes. She later falls in love with Je-ha. Jo Sung-ha as Jang Se-joon He is a philandering presidential candidate partially responsible for corrupting his wife. He is also An-na's biological father. Because of An-na, whose existence is unknown to the public, he is unwillingly under the control of his corrupt wife, who blackmails him into doing her bidding. Throughout the series, he doesn't seem to show that he cares for his daughter, but later he reveals to Je-ha that he truly loves her and is willing to submit to his wife just to keep An-na safe. Kim Kap-soo as Park Kwan-soo He is Se-joon's political rival and leader of the current ruling party. He is the main antagonist of the series.
Supporting Lee Jung-jin as Choi Sung-won Yoo-jin's younger half-brother and the current CEO of the chaebol JB Group. Both he and his sister are at odds for the majority control of both JSS Security and their family company. He also constantly tries to get Je-ha to join him, believing him to be a powerful person, but Je-ha continuously refuses due to his loyalty to Yoo-jin, until Sung-won convinces An-na first. Shin Dong-mi as Kim Dong-mi She is Yoo-jin's personal secretary and right-hand woman. She greatly dislikes Je-ha and attempts to kill him on several occasions. Lee Ye-eun as Jang Mi-ran She is one of the personal bodyguards working alongside Je-ha to protect An-na, operating under the codename J4. She had a crush on Je-ha at first, but later accepted Sung-gyu's confession of love. Lee Jae-woo as Kang Sung-gyu He is one of the personal bodyguards working alongside Je-ha and Mi-ran to protect An-na, operating under the codename K1. He is in love with Mi-ran, who later reciprocated his feelings. Lee Chul-min as Park Kwan-soo's aide Song Kyung-chul as Song Young-chun So Hee-jung as Head of JSS medical team. Jeon Bae-soo as Joo Chul-ho, JH's former commander in Iraq, now JSS mercenary in charge of SJ and YJ's security where he is often known as Chief Joo.
Extended
Special appearances
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