一天，609号(🐽)房东花花公子Mum，看(kàn )到一个小(xiǎo )伙在他(tā )的床上，从(🎹)他(tā )们第(dì )(🐉)一(🛤)次见面就(jiù )(🏴)上(shàng )床那天后，神秘的事情(qíng )不(bú )断发(fā )生。Mum总是(⚫)梦见(🕔)一个神秘的事件，半(🕯)夜(yè )(👁)总会被奇怪的梦突然惊醒。Mum试(shì )图通(😚)过和(hé )(✖)女人上床(🖍)来忘记和年轻男子的“情感”。然(🧚)而，这(🥁)甚至让他多想想他的梦(mèng )中情人(🎛)。然(rán )后(🥎)，他把事件的点(✋)点(diǎn )(🐑)滴滴联系(xì )起来，提(👓)出(chū )了(le )反(fǎn )向平行宇(yǔ )宙的(⛏)理论。最(🧤)后(🔔)，他在现实生(💠)活中(⛳)遇到了(le )(🎋)Dew。虽然他们(men )的第一次见(jiàn )面是Dew的最后一天，但也是(shì )(🦇)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!