Seven people become involved in the case of a missing girl and find themselves caught up in an explosive incident. Matthew Lee (Uhm Ki-Joon) runs South Korea’s largest mobile platform company, but he is a mysterious figure hidden behind a veil. Only a few people know who he is. He becomes involved in a bizarre case, which leads him to reveal himself to the public. Geum Ra-Hee (Hwang Jung-Eum) is the CEO of a drama production company. She is skilled and aggressive in her work. Geum Ra-Hee values money and success above all else in her life and will stop at nothing to achieve them. To receive a massive inheritance, she sets out to find her daughter, whom she abandoned 15 years ago. Min Do-Hyeok (Lee Joon) used to be a gangster. He has no dreams or hopes for his life. If he trusts someone once, he will trust them forever. For this reason, his life is full of betrayals. Han Mo-Ne (Lee Yoo-Bi) wants to become an idol and is admired by her friends. She seems to have a perfect life, with good looks and a wealthy family background, but she has a weakness. Her weakness is that she constantly tells lies. Her life is full of these lies. Cha Ju-Ran (Shin Eun-Kyung) is a gynecologist. She lives with Bang Chil-Sung (Lee Deok-Hwa), who is much older than she is. Bang Chil-Sung is a very wealthy man, and Cha Ju-Ran loves his money. Meanwhile, Cha Ju-Ran and Geum Ra-Hee are engaged in a psychological battle over Bang Chil-Sung’s wealth. Geum Ra-Hee brings Bang Chil-Sung his only grandson. Yang Jin-Mo (Yoon Jong-Hoon) is the CEO of Cherry Entertainment. He’s usually kind, but once his anger flares up, no one can stop him. He’s extremely greedy and will do anything for profit.