一天，609号房东花花(huā )公(gōng )子(zǐ )(🍩)Mum，看(😘)到一(🕸)个小伙(🕰)在他的床上，从(cóng )他们第(🐉)一(yī )(🛤)次(🌰)见面就上床那天后(hòu )(😧)，神(📿)秘(mì )的事情不断发生。Mum总是梦见一个神秘的事(shì )件(🎡)，半夜总(🙍)会被奇(🔲)怪的梦突然惊醒。Mum试图通(tōng )过和女(🙁)人上(🚸)床(🖍)来忘记和年轻(qīng )男子(🤷)的“情感”。然而(ér )，这甚(🌚)至让(ràng )他多想想他的梦中情人。然后，他把事(shì )件(📙)的点点滴滴联系起(qǐ )来，提出(chū )了反向平(píng )行宇宙的理(lǐ )论。最后(🔔)，他在现实生(💠)活中遇到了Dew。虽然(🧣)他(tā )们的第一(👣)次(🗳)见(jiàn )面是Dew的(de )(🏉)最后(🍑)一(yī )天，但也是(🦇)他们两(➡)个(gè )互(hù )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!