秉持(chí )着“损友(🔨)”原(yuán )则(zé )厮(sī )混(hún )多(📼)年(📒)的青(🐌)梅竹(🔼)马(🌰)卢嘉(jiā )嘉（李婷(🛍)婷饰）和年孟宇（刘芮麟饰）在(🌰)高中(🔬)毕(🏴)业后一起去上(shàng )海读医(👋)科(⏬)大学。年孟宇凭借自(zì )己(🖲)的经济头脑和家(🤷)庭关(guān )系开始在校创(💆)业(yè )，财(cái )迷卢嘉(🏐)嘉则为给异地初恋男(nán )友买手机变(biàn )身年孟宇“御用(🤯)会计”顺便兼职(zhí )“拾荒”。之(zhī )后卢嘉嘉认(⏯)清感(🖲)情决定分手，年(🌊)孟(mèng )宇却被学校(xiào )的古典美(🐑)女(nǚ )孙晓慧（(🌞)肖(xiāo )雨(yǔ )(㊙)饰）吸(🙉)引(yǐn )。孙(🎾)晓慧作为情场高手(shǒu )(🧤)玩(🔔)弄年(🤲)孟宇于(yú )股掌，在(🏯)卢嘉(jiā )嘉的帮(bāng )(🐀)助下(xià )才认(🤖)清真相。此时(shí )，卢嘉嘉(💹)的代课学长姜枫喜欢上卢嘉嘉，年孟宇也渐渐意识到(dào )自(zì )己对卢嘉嘉(jiā )的感(gǎn )情。非(🙎)典的(🎥)意外到来让三(😙)人开(⏲)启同居生活，姜枫向(xiàng )卢嘉(jiā )嘉(jiā )表白(bái )(🏃)却被拒绝。年孟宇终于意(yì )识到和卢嘉嘉多年(⏳)损友(yǒu )背(🎐)后的爱情(qíng )真(zhēn )相