一天(👷)，609号房东花花公子(🍩)Mum，看(kàn )到(🕟)一个(gè )小伙在(zài )他的床(🎺)上，从他(🆖)们第一次(cì )见(jiàn )面就上(🗼)床(🐮)那天后，神秘的(👋)事情不(🎏)断发生。Mum总是(shì )梦(🐿)见一个(gè )神秘的事件(jiàn )，半(bàn )(🕯)夜总(zǒng )会被奇怪(guài )(🥄)的梦突然(rán )惊醒。Mum试图通过和女人上床来忘记和(hé )年轻(qīng )男子的“情感”。然而，这甚至让(🚨)他多(⏯)想(xiǎng )想(🖲)他的梦中(🦗)情人(🎛)。然(rán )后，他把事件的点点(🐑)滴滴联系起来(🙄)，提出了反向平行(⏰)宇宙的(⛏)理论(lùn )。最(zuì )后，他在(🕙)现(⛳)实(😍)生(shēng )活中(zhōng )遇(🏯)到了Dew。虽然(rán )他(🤖)们的第一次见面是Dew的最(zuì )后一(yī )天，但也是他们(men )两个(gè )互(hù )相(🌹)帮助改变未来的开始！Oneday,astrangemanissleepingonMum’sbed,aplayboyandtheownerofroom609.Theybothhavepassionatesexthefirsttimetheymeetandafterthat,mysteriousthingskeephapping.Mumalwaysdreamsofamysteriouseventandwakeupfrightenedinthemiddleofthenight.Mumtriestoforgetthe"feeling"withtheyoungmanbyhavingsexwithwomen.However,itevenmakeshimthinkofthemanofhisdreammore.Then,heconnectsthedotsoftheeventsandcomesupwiththetheoryofreverseparalleluniverse.Finally,hemeetsDewinreallife.ThoughtheirfirstmeetingisDew’slastday,butalsothebeginningthatbothofthemwillhelpeachothertochangethefuture!