一天，609号房东(📼)花花(huā )公子Mum，看(kàn )到一(🕸)个小伙在他的床上，从他们第一(🛤)次见面就上(shàng )床那(nà )(🥩)天(💤)后，神秘(🌫)的事情不(bú )断发(🌗)生。Mum总是梦见一个神秘(🤷)的事件，半夜总会被(✳)奇(qí )怪(guài )的(de )梦突然惊醒(🕌)。Mum试图通过和女人上床来忘记(jì )(🥀)和年轻(qīng )男(🐖)子(🤷)的(de )(🔊)“情感”。然(rán )而，这甚(shèn )至让他多(duō )想想他的梦中(🦗)情(🌑)人。然后(hòu )，他把事(🙂)件的(de )点(diǎn )点滴(dī )(🏂)滴(dī )联系(xì )(🤸)起来，提出了反向平行宇(🈴)宙(🍄)的理论。最后(hòu )，他(tā )在(zài )现实生活中遇到(🤳)了Dew。虽然他(🤖)们的第一(👣)次见面(miàn )(🈁)是Dew的最后一天，但也是他们(men )两个互(hù )(🐛)相帮(⛏)助改变未来的开始(shǐ )！Oneday,astrangemanissleepingonMum’sbed,aplayboyandtheownerofroom609.Theybothhavepassionatesexthefirsttimetheymeetandafterthat,mysteriousthingskeephapping.Mumalwaysdreamsofamysteriouseventandwakeupfrightenedinthemiddleofthenight.Mumtriestoforgetthe"feeling"withtheyoungmanbyhavingsexwithwomen.However,itevenmakeshimthinkofthemanofhisdreammore.Then,heconnectsthedotsoftheeventsandcomesupwiththetheoryofreverseparalleluniverse.Finally,hemeetsDewinreallife.ThoughtheirfirstmeetingisDew’slastday,butalsothebeginningthatbothofthemwillhelpeachothertochangethefuture!