一(yī )天，609号房东花花公子Mum，看到一(🕸)个(gè )小(xiǎo )伙在(🤢)他(tā )的床上(shàng )，从(cóng )(🎹)他们第一次见(jiàn )面(🔬)就上床(chuáng )那天后，神秘(mì )的(👋)事(shì )情不断发(fā )(🌗)生(🏇)。Mum总(zǒng )是梦见一(🔸)个(gè )神(shén )秘(🤷)的事件，半(🕯)夜总会被奇怪(guài )的梦(mèng )突(tū )(🏐)然惊(jīng )醒。Mum试图通过和女(🙁)人(rén )上(shàng )床来(🚑)忘记和年轻(😱)男子(zǐ )的“情感”。然(🧚)而，这(🥁)甚至让他多想想他的(de )梦中情人。然后(🥎)，他把事件的点点(diǎn )滴滴联(🤠)系起来，提出(🙀)了反向平行宇宙的理论。最(🧤)后，他(🤲)在(🕙)现实(shí )生活(👺)中遇到了Dew。虽然他们的第一(yī )次见面是(❕)Dew的最(🥊)后(hòu )(🍑)一天，但也是他们两个互相(xiàng )帮助改变未来的(de )开(💅)始！Oneday,astrangemanissleepingonMum’sbed,aplayboyandtheownerofroom609.Theybothhavepassionatesexthefirsttimetheymeetandafterthat,mysteriousthingskeephapping.Mumalwaysdreamsofamysteriouseventandwakeupfrightenedinthemiddleofthenight.Mumtriestoforgetthe"feeling"withtheyoungmanbyhavingsexwithwomen.However,itevenmakeshimthinkofthemanofhisdreammore.Then,heconnectsthedotsoftheeventsandcomesupwiththetheoryofreverseparalleluniverse.Finally,hemeetsDewinreallife.ThoughtheirfirstmeetingisDew’slastday,butalsothebeginningthatbothofthemwillhelpeachothertochangethefuture!