After a brief stint working in Tokyo, Riko returns to her parents' residence following her grandfather's death. During a rare family gathering on the roof, Riko unearths a half-completed plastic model among her belongings. Guided by Yassan, she discovers the Yajima model shop, a place her grandfather often visited. Inspired, Riko decides to build her very first plastic model. Through this newfound hobby, Riko begins to feel a deeper connection to her late grandfather and her family. She resolves to spend the entire summer at her parents' house, determined to complete what her grandfather regretted, hoping to honor his memory and strengthen her familial ties. This journey of crafting plastic models becomes a personal exploration of family history and self-discovery.
Other names: 量産型リコ -最後のプラモ女子の人生組み立て記-, りょうさんがたリコ さいごのプラモじょしのじんせいくみたてき