Shuta, Saku and Michiru have been best friends since they were kids. Tragedy strikes the friends when during the winter of 2010, Saku dies from a heart attack. After Saku's death, Shuta and Michiru become more distant. On the second year anniversary of Saku's death, Shuta boards a train in the Enoshima subway. Somehow, Shuta travels back in time to 2010, before Saku died from a heart attack. Although Shuta is confused by the time change, he attempts to save Saku by changing the past.
Taiga Kusunoki is a less than popular, tsundere, second-generation actor. Although he is the son of the famous and popular actor, Kotaro Kusunoki, his career is far below the level of his father's. Taiga develops an inferiority complex due to the huge difference between his image and his father's popularity to the point that his management company struggles to find work for him. Due to his lack of roles, he spends his days with Keita Ueno, a fellow second-generation actor with a similar plight as Taiga. As fate goes, the two friends go sky diving one day and Taiga loses control of his parachute, landing himself in a tree several miles away from his destination point. Shiori, a beautiful, cheerful woman, rescues him. Laughing away all her worries, Shiori is the exact opposite of Taiga and a huge fan of his famous father.
