一天,609號(hào)房東花花公子Mum,看到一個(gè)小伙在他的床上,從他們第一次見面就上床那天后,神秘的事情不斷發(fā)生。Mum總是夢(mèng)見一個(gè)神秘的事件,半夜總會(huì)被奇怪的夢(mèng)突然驚醒。Mum試圖通過和女人上床來忘記和年輕男子的“情感”。然而,這甚至讓他多想想他的夢(mèng)中情人。然后,他把事件的點(diǎn)點(diǎn)滴滴聯(lián)系起來,提出了反向平行宇宙的理論。最后,他在現(xiàn)實(shí)生活中遇到了Dew。雖然他們的第一次見面是Dew的最后一天,但也是他們兩個(gè)互相幫助改變未來的開始!Oneday,astrangemanissleepingonMum’sbed,aplayboyandtheownerofroom609.Theybothhavepassionatesexthefirsttimetheymeetandafterthat,mysteriousthingskeephapping.Mumalwaysdreamsofamysteriouseventandwakeupfrightenedinthemiddleofthenight.Mumtriestoforgetthe"feeling"withtheyoungmanbyhavingsexwithwomen.However,itevenmakeshimthinkofthemanofhisdreammore.Then,heconnectsthedotsoftheeventsandcomesupwiththetheoryofreverseparalleluniverse.Finally,hemeetsDewinreallife.ThoughtheirfirstmeetingisDew’slastday,butalsothebeginningthatbothofthemwillhelpeachothertochangethefuture!