中(🈯)医(🕕)学院大四学(🆓)生宋忆橘,长久以(🐌)来都是靠助教萧井帮(bāng )忙水学分,相(xiàng )识多年(nián )的二人一(🛤)直都(dōu )是互惠互利的关系(xì )。然而在一场(🎏)白昼流(🏇)星后,萧井(🖲)却(què )频(🐿)频反(fǎn )水(shuǐ ),让(ràng )划水(shuǐ )少女(🕖)宋忆(👁)橘(🙍)百思不得(🥄)其解,拉起小(xiǎo )警(jǐng )报。的确(🥞),眼前(qián )的萧(xiāo )井(jǐng )已是来自未来(🕕)时空(kōng )的(de )人,他潜入现实(shí )时(shí )空,接近(jìn )宋忆橘的爷爷,伺(❔)机偷(🦗)走(zǒu )其(qí )正(🌊)在培育的(💻)一株珍贵草(✋)药。不料因穿(chuān )越使时空造成三个月的(de )偏(🍄)差(⛏),而宋(sòng )爷爷又将(🤲)宋忆橘拜(bài )托给萧井照顾,一(yī )切“阴差阳错”都(👣)使萧井十分头大。为达目的,萧井(🐾)硬撑(😊)着勉(➡)强(qiáng )社(shè )交,却(🐨)逐(👪)渐被明朗少女(🌼)宋忆(💹)橘治愈,找(🔈)到了内心的解药(yào ),可离别却悄(📛)然将至……