Choi Il-hwa

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

Professional baduk (go) player Tae-seok loses a high-stakes game to infamous underground gambler Sal-soo, and ends up framed for the murder of his own brother and locked up in prison. He vows revenge and trains ferociously. After serving his seven-year sentence, he gets in touch with his brother's former associate "Tricks," hermit and blind master player "The Lord," and skillful junkyard owner Mok-su; together, they begin formulating a plan to get back at Sal-soo and his men. Tae-seok slowly penetrates Sal-soo's inner circle and his gambling joint, and eliminates Sal-soo's men one by one. But Sal-soo discovers Tae-seok's true identity and engages him in one final game that will seal the fates of the two men involved.

Jae-hyuk is a pharmaceutical worker for a medical supplies company. When a series of dead bodies are found floating in the Han River. The public is shocked to discovered that the deaths are related to a fatal outbreak of virus-infected mutant parasitic horsehair worms, called 'Yeongasi', that can control the human brain. Those infected shows symptoms of hunger and thirst, hence jumps into the river to combat dehydration. Whilst the authorities work to find a cure, Jae-hyuk struggles to save his family when they also exhibits similar symptoms.