A story of love and friendship between five high school students from Seoyeon High School. Lee Ha-Min (Seo Ji-Hoon) appears like a bright person, but there is also darkness within his mind. Han So-Mang ( So Ju-Yeon) is a warm-hearted person, but she is also quite timid. Lee Jae-Min (Kim Min-Kyu) is a popular student with a painful past. He is kind to everyone around him. Yoon Bo-Mi (Kang Hye-Won) is a sweet, model student. Choi Jin-Young (Yoon Hyun-Soo) loves playing games. He can seem unfriendly and has a delicate personality.

A suspense drama depicting mothers engaged in a fierce social media battle to destroy each others' happiness for their own, to free themselves from oppression, hurt, and secrets, and regain their true selves.

Is about the various things that occur when an ordinary daughter-in-law enters her in-laws’ household for the first time. The drama centers around Min Sa Rin. She is an expert at her job, having been an employee at a major corporation for 7 years, but still a rookie at marriage, having only been married for one month. She tries hard to be liked by her in-laws, but encounters unexpected incidents and finds it hard to get along with her new family. Moo Goo Young is her ordinary husband who is not particularly good nor bad. Although he loves his wife, he gets caught up in the confusion between her and his family. Park Gi Dong is Moo Goo Young’s mother and Min Sa Rin’s mother-in-law. She is an extremely realistic mother-in-law.