「潮死了。」

收到自己的兒時玩伴小舟潮的死訊後，網代慎平回到了闊別兩年的故鄉，和歌山市的日都島。

與家人和朋友再次見面，葬禮也如期舉行。但摯友菱形窗卻告訴他：「潮的死有疑點，可能是他殺。」

翌日，附近有一戶人突然都全家消失了。與此同時，慎平聽到了一個不祥的傳聞。 「看到與自己一模一樣的『影子』的人都會死。會被影子殺掉！」 而且潮的妹妹澪竟然也說：「姐姐在去世的三天前看到了影子。」 在紀淡海峽中的一座夏日小孤島上，一部跨越時空的科幻懸疑動畫即將拉開序幕。

2006年，29歲的漫畫家藤沼悟因為現實生活不順遂而持續掙扎，擁有著「重播」的時間跳躍能力，可在短時間內反覆倒帶重播，藉此阻止「事件」的發生。而他某天下班回到家時，從老家來訪的母親因在超市意外目睹到誘拐未遂，並認為誘拐犯與18年前悟的同班女同學雛月加代的遇害事件有關，隨後在悟的公寓遭到殺害，同時悟還被嫁禍成弒親兇手；這時悟的「重播」能力啟動，而這次「重播」卻回到了18年前……

Six teenagers fight for their dream of happiness and freedom, leaving behind all the problems with parents, teachers and others. Christiane, Stella, Babsi, Benno, Axel and Michi throw themselves into the heady nights of Berlin, without limits or rules, and celebrate life, love and temptation - until they have to realize that this rush will not only destroy their friendship, but can drive them into the abyss.

The Girls Next Door, also known as The Girls of the Playboy Mansion, is a reality television series which originally aired on E! from August 7, 2005 until August 8, 2010. The series was created by executive producer Kevin Burns and Hugh Hefner, founder and editor-in-chief of Playboy magazine.

The show was followed by two spin-offs, Kendra and Holly's World.