秉持着“损友”原则厮混(hún )多(📼)年的青梅竹马卢嘉(jiā )嘉（李(lǐ )婷婷饰）和年(nián )孟宇(yǔ )（刘芮麟饰(🐉)）在高中毕(bì )业后一起(💤)去上海读(dú )(🌫)医(👋)科大(dà )(🎲)学。年孟宇(♑)凭(píng )(📼)借自己(jǐ )的经济头脑和家庭关系开(🕖)始在校创业，财迷卢嘉嘉(jiā )则(🐖)为(🕌)给异地初恋男友(😚)买手机(🙁)变身年(nián )孟宇“御用(🤯)会(huì )计(🐖)”顺(🔊)便兼(jiān )职“拾荒”。之后(hòu )卢(lú )嘉嘉认清(😞)感(gǎn )情(🔢)决(jué )定分手，年孟宇(yǔ )却被学(xué )校(🙂)的(📙)古典美女(🏂)孙晓(🤠)慧（肖雨饰(👓)）吸(🙉)引。孙晓慧作为情(🥫)场(chǎng )高手玩(wán )弄年(🤲)孟宇于股掌，在卢(lú )嘉嘉(jiā )的帮助下才(cái )认清真相(xiàng )。此(cǐ )(🗳)时(shí )，卢嘉嘉(jiā )的代课(🥊)学长(👊)姜枫(💍)喜欢上卢(😊)嘉(🈸)嘉，年孟宇也渐渐意识到(dào )自己对卢嘉嘉(jiā )的感(😝)情。非(fēi )典的意(yì )外到(🤔)来让三人开启同居生活(huó )，姜枫向卢嘉嘉表白(🏃)却被(🏴)拒(jù )绝。年孟宇终(zhōng )于意(yì )识到和卢(lú )嘉(jiā )嘉(🌸)多年损友背后(🍁)的爱情(🕕)真相