In a town where strict rules shape students into their “best selves,” a hidden Bloodfruit Tree bears crimson fruit. A mysterious boy in black delivers these fruits only to those who truly “need” them. Once received, they awaken long-suppressed desires—gently unraveling the heart, and quietly leading the town toward irreversible collapse.

爱打嘴炮的台湾公务员阿正，在历经十次《海峡两岸礼俗专刊》被退件后，徬徨的面临着人生交叉口，没想到天无绝人之路，在水饺店巧遇一位呛辣北京姑娘秦朗，阿正逮住机会，自告奋勇要帮秦朗完成来台湾的目的，寻找奶奶的初恋情人陈光，于是阿正与秦朗两人一同展开了奇妙的寻人旅程。个性天差地远的二人，在朝夕相处和唇枪舌战的寻人过程中慢慢化开对彼此的偏见，也渐渐萌生暧昧情愫，随着陈光的曝光，最后寻找到的不只是奶奶当年的初恋情人，也同时找到了二人对焦灼人生的愉快答案…