一天，609号房东花花公子(🍩)Mum，看(😘)到一个(🛍)小伙在(zài )他的床上(shàng )，从他们第一次见(🍖)面就(🏴)上(shàng )床那天(💤)后，神(📿)秘的事情不断(❣)发(🌗)生。Mum总(🖲)是梦见一个(gè )神(shén )秘的事(shì )件，半夜总会被奇怪(🥄)的梦(mèng )(🚉)突然惊醒。Mum试(shì )图(tú )通过和女人上(shàng )床来(lái )忘(🐶)记(jì )和年轻男(nán )(🐖)子(🤷)的“情(qíng )感”。然(🧚)而，这甚至让(ràng )他多想想(🖲)他的梦(mèng )中情(🌑)人。然后，他把事(shì )件的点点(🐑)滴滴联系起来，提出(🙀)了(🙉)反向(xiàng )平行(háng )宇宙(zhòu )的理论。最后(hòu )(🔔)，他在现实生活中遇到(dào )了Dew。虽(suī )然他们的(de )第一(yī )次见面是(shì )Dew的最(🥊)后一天(🛎)，但也(🐾)是他们(🈸)两个互相帮助改变(biàn )未来的(🌪)开始！Oneday,astrangemanissleepingonMum’sbed,aplayboyandtheownerofroom609.Theybothhavepassionatesexthefirsttimetheymeetandafterthat,mysteriousthingskeephapping.Mumalwaysdreamsofamysteriouseventandwakeupfrightenedinthemiddleofthenight.Mumtriestoforgetthe"feeling"withtheyoungmanbyhavingsexwithwomen.However,itevenmakeshimthinkofthemanofhisdreammore.Then,heconnectsthedotsoftheeventsandcomesupwiththetheoryofreverseparalleluniverse.Finally,hemeetsDewinreallife.ThoughtheirfirstmeetingisDew’slastday,butalsothebeginningthatbothofthemwillhelpeachothertochangethefuture!