Byung-tae is the kid who is always on the receiving end of beatings from the school bullies—that is, until he meets Pan-su, a martial arts expert who takes him under his wing.

Yong-soon is an 18-year-old high school student. She falls in love with her gym teacher, but she thinks her teacher might have a girlfriend. Yong-Soon and her friends try to find out whether he does have a girlfriend, but they can't find any clues. Making things worse, her father brings a new stepmother from Mongolia.

Agent Lam (Tony Leung) sets out to track a pair of plates used to make fake American dollars. When he discovers the plates, they are conned out of him by enigmatic US Embassy workers Owen (Richie Ren) and JJ (Shu Qi). With the trail now leading to Korea, Lam sets off in hot pursuit. There, amidst the dangerous and glamorous urban landscape of Seoul, Lam finds himself confronting an underworld crime boss known as the Polar Bear, head of the biggest counterfeiting organisation in Asia.

Gong Pil-du is a detective recruited for his athletic skills and achievement, a bronze Universiade medalist in wrestling. Since then, however, he has had little success in his career, and remains a 40-year old bachelor with a terrible credit record. His greatest crisis comes when his beloved father needs money for crucial surgery. To get the money, Gong makes a deal with a vicious crime boss. This makes him more miserable than ever, as he is now suspected as a corrupt cop. Gong goes on a quest to prove his innocence. Will he be successful for once in his life?

Bohol Island, Philippines, captivates tourists and divers worldwide with its beautiful scenery and deep-sea mystery. One day, friends who knew in Seoul visit a man who works as a freediving instructor in Bohol.

The story of boys who are scattered in the past, present, and future to find the star of hope in order to save the Earth which is devastated by a virus spread by a group of evil.