The story features two men and two women in their 30s who meet by "chance" and form a quartet to play music together at a bungalow in Karuizawa for the winter only. They all have dreams which they didn't manage to realise and are on the downward path in their life. However, their meeting is not by chance at all and a big secret is waiting to be unravelled...
Matsu plays the lead character Maki Maki who is responsible for playing the first violin in the quartet. As Maki has a family of her own, she lives in Tokyo during weekdays and goes to Karuizawa on the weekends. Being someone who has a very negative thinking and not an assertive person, she somehow takes a step back from the others but sometimes says things which hit the nail on its head so the rest of them are unable to fathom what kind of person she is.
Matsuda plays the role of Beppu Tsukasa who plays the second violin in the quartet and was born in a family of musicians. However, he chooses to work at a doughnuts company while playing the violin. Among the four of them, he assumes the role of the leader and is calm and able to communicate with the others. He provides the bungalow at Karuizawa which belongs to his grandfather for the quartet's activities. Although he looks like he has no issues in life, he has an unspeakable secret.
Mitsushima plays Sebuki Suzume who is responsible for playing the cello and lives at Tsukasa's bungalow because she is unemployed. Most of the time, she sleeps her day away but when she plays the cello, she transforms into another person. She is usually relaxed and does things at her own pace but has a motive for joining the quartet.
Last but not least, Takahashi plays Iemori Yutaka who plays the viola and is an argumentative guy who has a lot of principles which he insists on sticking to.
Sources: Sponichi / Cinemacafe / Oricon