A detective thinks about quitting his job. He takes on a female university student murder case that was disguised as a suicide. The detective becomes obsessed with solving the case. He has a young sister and she meets a man. The man does not remember when he was little. He is not a good person, but she has sympathy for him. The detective tries to push the man away from his younger sister. The detective suspects that the man is somehow involved in the female university student murder case. The man and the detective's younger sister fall in love.

Kingdom of Goguryeo, ancient Korea, 645. The ruthless Emperor Taizong of Tang invades the country and leads his armies towards the capital, achieving one victory after another, but on his way is the stronghold of Ansi, protected by General Yang Man-chu, who will do everything possible to stop the invasion, even if his troops are outnumbered by thousands of enemies.

While investigating a serial murder case, Han Tae Joo gets into an incident. When he wakes up, he finds himself back in 1987. To get back to his present world, he must solve the murder case.

From Kim Won Seok, the writer of Descendants of the Sun, a drama about a special bodyguard with a background in special investigations and the Hallyu star he is supposed to protect.

Two best friends, So-yool and Yeon-hee, dream of becoming the top artists in Seoul together. But their friendship doesn't last long as Yoon-woo, So-yool's first love and songwriter, falls in love with Yeon-hee and her voice. So-yool's feeling of jealousy and inferiority towards Yeon-hee grows by the day, and she eventually makes a drastic decision to bring the two lovers down.

A homicide detective tries to flush out a mob enforcer by befriending the suspect's beautiful girlfriend, but soon develops romantic feelings for her.

Yi-Hwan (Lee Min-Ki) is a former professional baseball player. He was involved in fixing games and lost everything. Gang boss Sang-Ha (Park Sung-Woong) runs a money lending business and a gambling location. He makes Yi-Hwan work for him. Meanwhile, Yi-Hwan falls for bar owner Yeon-Soo (Lee Tae-Im).

An undercover cop has his loyalties tested when the boss of the corporate gang he's spent years infiltrating dies.