The story is about Riko Komukai, the second daughter of the Komukai family who has grown up equally between the capable eldest daughter and the third daughter who is a free woman. She is engaged in dispatch work in Tokyo.Taking the death of their grandfather as an opportunity, the three sisters of Xiaoxiang's family got together. After 4 years, the whole family was finally reunited.

When Riko was sorting out her grandfather's belongings, she discovered a half-made plastic model. She met Yajima at the “Yajima Model Shop” where her grandfather often visited during his lifetime. Under his guidance, she began to try to make plastic models.Through the plastic model, Li Zi got a little understanding of her grandfather and his family. She decided to stay in her hometown during the summer to make up for her grandfather's regrets.                                                 

After hearing the news of the death of her grandfather, Xiaomuang Riko (Yoda Yuki) decided to return to her hometown.After 4 years, the whole family gathered together again for a vigil, but Xiaoxiang's family couldn't say anything about missing their grandfather other than "too gentle“"...

Under such circumstances, everyone discovered a set of half-made plastic models from their grandfather's relics.Lizi felt that since she was halfway done, she might as well finish it, and she walked towards ”Yajima Hobby Shop%.There, she met the shop owner Yasang (Tanaka Katsuji) and guided Riko to try making plastic models...

Then, looking at the plastic model brought to life, Riko...

It’s been a long time since I spent the summer vacation in my hometown. With nothing to do, my aunt and nephew Yuto (Long Taiyi) came to Li Zi (Yu Tian Yuxi)’s home.Everyone was in high spirits because of the reunion after a long absence, leaving Rizi and Yuuto at home to go shopping.

Riko, who was restless, took Yuto to do some free research.Riko started catching insects with great interest, but she couldn't make Yuto happy, so she walked into the Yajima Hobby Shop worried.Then, in order to make plastic models with Yuuto, Riko started a certain battle...!

The three sisters, Riko (Yota Yuki), suddenly discovered that their home was full of mysterious idol merchandise...The true identity of that mysterious idol was the tip that her mother was obsessed with! In order to get rid of the crisis of Xiaoxiang's family being eroded by the idol, the three Lizi sisters immediately began to investigate, and found that their mother was even more trapped in the quagmire than they imagined.

Riko thought about whether she had a better hobby to help her mother get out of the trap, so she took her mother to the Yajima Hobby Shop.Mother and daughter slowly learned about their mother's heart by making plastic models...

In the heart of Komukai Riko (Yoda Yuki), her father Koichiro (Yashiba Toshihiro) is a mysterious existence, but he is also a gentle father who works for the sake of his family at all risks.Riko, who had troubles at work, decided to talk about her troubles, but the nervous Koichiro ran away without saying anything...

Feeling discouraged, Koichiro entered the Yajima model shop under the guidance of Mr. Yajima (Kenoji Tanaka) and started making plastic models.Riko also joined the team, and Koichiro looked at the plastic model that was slowly dyed in color and began to tell the story of Jin (Noyuki Morishita)...

Riko (Yuda Yuki) really wanted to attend the fireworks display in the next town, but was rejected by her family one by one.In this case, the appearance of his father Koichiro (Yashiba Toshihiro) changed the situation, and he was finally able to attend the long-awaited fireworks display!

However, Riko and Koichiro, who were full of joy, encountered a certain tragedy!Li Zi's hope was dashed, and she ultimately failed to go to the fireworks display.In order to distract herself, Riko went to Yajima Hobby Shop.Rizi, who was unable to cross the mountains of the town next door, saw what kind of scenery she saw through the plastic model.!

Yumi (Ichikawa Yui), who has been staying in her hometown, has a certain problem in her husband-wife relationship... The worried Riko (Yoda Yuki) took Yumi to Yajima Hobby Shop and asked her to try making models.Because I challenged real grade (precision part structure), I lost track of time.

At this time, what suddenly appeared was... Yumi's husband!By chance, he also participated in plastic model making, which was a long-lost moment for the couple.There, Yumei spoke her true words...

Riko (with Yuki Tian) suddenly received a confession from her childhood sweetheart.The two seemed to have made a certain agreement when they were children, but Lizi, who had long forgotten it, refused the confession without hesitation.However, facing this childhood sweetheart who was stubborn and refused to give up, Lizi found it difficult to deal with.She proposed doing a good deed together.

After completing a series of tasks, a ferocious wild boar suddenly appeared in front of the two of them...!?After the battle, in order to heal her injured childhood sweetheart, Riko went to Yajima Hobby Shop...

Riko (Yoda Yuki) notices that her younger sister Kae (Satsuki Emi), who is worried about her future, has received a brochure from a photography school.Although Xiange, who likes photography, is often persuaded to become a director by people around her, she is confused about whether “what she likes” and “what she wants to do” should be equated.

After learning about Kae's troubles, Riko took her to the Yajima Model Shop in order to let her experience her favorite plastic model making.Seeing Riko enjoying the things she loves, Kae also happily completed the cherished plastic model with her...

In the eleventh town where Riko (Yoda Yuki) and her family live, the development plan of a hot spring resort is being promoted.When the family attended a briefing for residents, they discovered that there was Xiao Xiang's family on the land planned for construction. The resort company began relocation negotiations with Xiao Xiang's family.The Xiaoxiang family had differences of opinion about relocation, which led to a big quarrel...no conclusion could be reached.

The troubled Riko came to Yajima Hobby Shop... Can she find the destiny of her family through the model?

With the relocation issues caused by the development of the resort, the opinions of the Xiaoxiang family were divided into two groups, those in favor and those against.

There were constant quarrels at home, and Riko (with Yuki Tian), who had nowhere to go, fled to the family warehouse.There, she discovers the plastic model left behind by her grandfather Hitoshi (Noyuki Morishita).I learned from Yajima that this plastic model is the “last wish model” that my grandfather placed his thoughts on the real world.

Lizi suggested that the whole family make this set of plastic models together.Through the cooperation of the family, can the hearts of the divided family members be reunited?The story of a summer in Xiao Xiang’s family ends here——