一天，609号房东(dōng )花花公(gōng )(🐌)子Mum，看到一个(gè )小伙在(🤢)他的床上，从(🎹)他们第(dì )一次(🌰)见面就上床那天后，神秘的事(⏬)情不断发生。Mum总(zǒng )是(⚫)梦见一个(gè )神秘的事件(🎡)，半夜总(🙍)会被(✳)奇怪的(de )梦突然惊醒。Mum试图通过和女人上(shàng )床来忘(🐶)记和(hé )年(nián )轻(😱)男子的(🔊)“情感”。然(🧚)而(🚣)，这甚至让(🚨)他(tā )多(⏯)想想他的梦(mèng )中情人。然后，他(💻)把(🗞)事件(jiàn )(📙)的点点滴滴联系(xì )起来，提出了(🙉)反向平(píng )(🎾)行宇宙的理论。最后(hòu )(🔔)，他(tā )在现实生(shēng )活(huó )中遇到了Dew。虽然(🧣)他(tā )们(men )的(de )第(🌮)一次见面(miàn )是Dew的(🏉)最后一天(🛎)，但也(yě )是他们两个互相(xiàng )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!