一天，609号房(🥇)东花花公子Mum，看到一个小伙在(zài )他的床(🎺)上(🔧)，从他们第一(🛤)次见面就上床那天后(😧)，神秘的事情不断发(fā )生。Mum总是梦(mèng )见一个神(shén )秘的事件，半夜总会被奇怪的梦突然(rán )惊醒。Mum试图通(😚)过和女人上床来忘记(jì )和年(nián )轻男子的“情感”。然而，这甚至让他(tā )(🛑)多想想他(🔢)的(de )梦中(🦗)情(qíng )人。然后，他把事(shì )件的点(✋)点(🐑)滴滴联(lián )系起来，提出了反向平(píng )行宇宙的理(🥫)论(🤷)。最(zuì )后，他(🤲)在现实生(shēng )活中遇到了Dew。虽(🚴)然他们(men )的第一(👣)次见面是Dew的最后一天，但也是他们(men )两个互相帮(⛏)助改变未来的开(kāi )始(🌼)！Oneday,astrangemanissleepingonMum’sbed,aplayboyandtheownerofroom609.Theybothhavepassionatesexthefirsttimetheymeetandafterthat,mysteriousthingskeephapping.Mumalwaysdreamsofamysteriouseventandwakeupfrightenedinthemiddleofthenight.Mumtriestoforgetthe"feeling"withtheyoungmanbyhavingsexwithwomen.However,itevenmakeshimthinkofthemanofhisdreammore.Then,heconnectsthedotsoftheeventsandcomesupwiththetheoryofreverseparalleluniverse.Finally,hemeetsDewinreallife.ThoughtheirfirstmeetingisDew’slastday,butalsothebeginningthatbothofthemwillhelpeachothertochangethefuture!