Oh Ye-Jin is a ceramic artist. She dreams of finding ordinary happiness, but life throws her a twist when she falls in love with brothers Seo Hwan and Seo Jin. Seo Hwan is an architectural designer. He falls in love with Oh Ye-Jin at first sight, but his feelings puts him up against his older brother Seo Jin. Older brother Seo Jin is a race car driver. He became attracted to Oh Ye-Jin after he met her for the first time at his father's workshop. Meanwhile, Carry Jung is Seo Jin’s ex-girlfriend. Even though they broke up, she can't get over him.
Cha Ji-Won is a detective. She is married to Baek Hee-Sung they a daughter. Baek Hee-Sung seems like a committed husband and father, but he hides his cruel past and lives under another person's identity. He deceives his wife completely. Cha Ji-Won learns of his deception and chases his past.
Mysterious cases take place at an apartment complex which is about to go under reconstruction. Lee Goong-Bok is a real estate agent that works with apartments there. She has a meddlesome type of personality. In Cheol-Ho is a veteran detective.
Painter Youngsoo hears secondhand that his girlfriend, Minjung, has recently had drinks with an unknown man. This leads to a quarrel that seems to end their relationship. The next day, Youngsoo sets out in search of her, at the same time that Minjung—or a woman who looks exactly like her and may or may not be her twin—has a series of encounters with strange men, some of whom claim to have met her before.
Flight attendant Cassandra Bowden wakes in her hotel room hungover from the night before in Dubai with a dead body lying next to her. Afraid to call the police, she continues her morning as if nothing happened, joining the other flight attendants and pilots traveling to the airport. In New York, she is met by FBI agents who question her about her recent layover in Dubai. Still unable to piece the night together, she begins to wonder if she could be the killer.
When 28-year-old Seo-yeon gets a call from a woman named Young-sook asking for her friend. Seo-yeon hangs up thinking the woman has the wrong number, but later learns that the call was coming from the same house 20 years ago.
Pororo and his friends at the pirate restaurant accidentally take a treasure map of the legendary treasure and head to the treasure island. While searching for friends scattered on the mysterious treasure island where the secrets of ancient civilization are kept, they meet a long-trapped pirate hero, Captain Silver, and solves the mystery of the treasure map with him.
Set more than seven years after the world has become a frozen wasteland, the remnants of humanity inhabit a gigantic, perpetually-moving train that circles the globe as class warfare, social injustice and the politics of survival play out.