一天(👷)，609号房东花花(huā )公子Mum，看到(🕟)一个(🛍)小伙(🕰)在(zài )他(🤴)的床(🎺)上(shàng )，从他们(men )第一次(🌰)见面就上(🗼)床那天(💤)后，神秘的事情(qíng )不断发生。Mum总是梦(mèng )(🐿)见(jiàn )一(yī )个神秘(🤷)的事件，半(🕯)夜总会被奇怪的梦突(tū )然惊醒。Mum试图(🗑)通过和(hé )女人上床来忘(wàng )记和年轻男子(zǐ )(🤷)的(de )“情(qíng )感(🚢)”。然(🧚)而(🚣)，这甚(shèn )至让他多想想他(tā )的梦中(zhōng )情人。然后，他把事件的(🔝)点点滴滴联(lián )系起(🌞)来，提出(chū )(🙀)了(le )反向(xiàng )平行宇(🈴)宙的理论。最后，他在现(xiàn )实(shí )生(💠)活中遇到了(le )Dew。虽然(🧣)他(🤖)们(men )的第一次见面(🈁)是Dew的最后一天，但(dàn )也是他们两个互相帮助(🐨)改变(biàn )未(wèi )来(lái )的开始！Oneday,astrangemanissleepingonMum’(🏴)sbed,aplayboyandtheownerofroom609.Theybothhavepassionatesexthefirsttimetheymeetandafterthat,mysteriousthingskeephapping.Mumalwaysdreamsofamysteriouseventandwakeupfrightenedinthemiddleofthenight.Mumtriestoforgetthe"feeling"withtheyoungmanbyhavingsexwithwomen.However,itevenmakeshimthinkofthemanofhisdreammore.Then,heconnectsthedotsoftheeventsandcomesupwiththetheoryofreverseparalleluniverse.Finally,hemeetsDewinreallife.ThoughtheirfirstmeetingisDew’slastday,butalsothebeginningthatbothofthemwillhelpeachothertochangethefuture!