Takeshi Makoto (Ninomiya Kazuya) graduated from a third-rate university with a mediocre diploma and mediocre work experience. After working in the company for three months, he decided to quit his job because he could not adapt to the working life. Zhi felt that he should be able to find a job with higher salary and better treatment, but the reality is that he encountered obstacles everywhere and could only do odd jobs, and he could not do it for long. Zhi's father (Takenaka Naoto) felt that Zhi was not motivated, and the relationship between father and son deteriorated sharply. One day, his mother (Asano Atsuko), who had always been considerate of Zhi, suddenly fainted and was diagnosed with depression. This was a great shock to Zhi. After some consideration, Zhi set a goal for himself, even if it was a part-time job, he would buy a new house for his mother. On the construction site where he worked part-time, Zhi met Chiba Manami (Karina), who had a cheerful personality. Manami's ambition was to become a bridge designer, and the energetic Manami gave Zhi a lot of advice. But the road to making money by working part-time to buy a house is full of difficulties. Can Zhi overcome all difficulties and realize his dream?