Hanno Tomoko (Uchida Rio), a reserved 30-year-old woman from Tokyo, currently lives alone in Gifu while she works for a company. Known as Panko, she is uncomfortable socialising with people and has a hard time expressing her opinions clearly. She also agonises about the subtle sexual harassment she has been subjected to by her boss and her struggle to turn down invitations from her colleagues. One day, Tomoko meets Takahashi Ryohei (Suzuki Nobuyuki) when she stops at a nearby bicycle shop for help after discovering that the bicycle chain has come off her bicycle. He runs the bicycle shop and is handsome, but has the appearance of a delinquent. Tomoko feels fearful of the slightly forceful Ryohei but gradually becomes attracted to him.
不善交际和表达自己的朋子某天因为自行车链条脱落而与经营自行车店的辽平相遇。朋子开始时对长相帅气但外表是不良少年的辽平有点害怕，但渐渐被温柔的他所吸引。
今年30歲、隻身在岐阜生活的飯野朋子，個性內向害羞、不擅表達意見，總為各種人際問題而苦惱。一天，朋子騎著自行車出門卻遇上鏈條脫落，因此與在附近經營自行車店的高橋遼平相遇。遼平雖然高大帥氣卻一副不良少年樣，還有點霸道，令朋子有些不知所措。然而遼平從未否定她的煩惱，他溫柔可靠的陪伴，漸漸打動了朋子的心…
