櫻井廣海（反町隆史飾）被同居的女友趕出了家門，開車去加油站時，加油工告訴他夏天若沒有事干可以去海邊玩玩。鈴木海都（竹野內豐飾）則是一個大公司的白領，由於工作中不順心，也請假去海邊。他們同時住進了和泉家的民宿旅館。主人的外孫女真琴（廣末涼子飾）還在上高二，大家相處得很融洽。一天真琴撿到了一個漂流瓶，瓶內的紙上只有兩行字能看清：God Bless You, We are beach boys.

後來真琴的媽媽來信讓真琴去東京，外公只好決定關閉旅館，兩位客人也被迫離開。但回到各自原來的環境中后，他們不自禁地想起海邊度過的日子，於是又不約而同地回到了海邊……

樱井广海（反町隆史饰）被同居的女友赶出了家门，开车去加油站时，加油工告诉他夏天若没有事干可以去海边玩玩。铃木海都（竹野内丰饰）则是一个大公司的白领，由于工作中不顺心，也请假去海边。他们同时住进了和泉家的民宿旅馆。主人的外孙女真琴（广末凉子饰）还在上高二，大家相处得很融洽。一天真琴捡到了一个漂流瓶，瓶内的纸上只有两行字能看清：God Bless You, We are beach boys. 后来真琴的妈妈来信让真琴去东京，外公只好决定关闭旅馆，两位客人也被迫离开。但回到各自原来的环境中后，他们不自禁地想起海边度过的日子，于是又不约而同地回到了海边……

Upon getting thrown out of his girlfriend Fujiko's apartment, Hiromi decides to head for the ocean. En route, he crosses paths with Kaito, an elite employee of a large multinational trading company in Tokyo who is running away from his problems at work after losing a key client. The two stumble into a quiet B&B on the beach run by the aging surfer Masaru and his high-school-aged granddaughter Makoto. Hiromi immediately applies to work there for the summer, and Kaito is forced to join him after he loses his wallet. The two share a room, with Hiromi trying to make friends, and Kaito at first resisting, unimpressed by Hiromi's devil-may-care attitude. Slowly over the ensuing episodes, Kaito becomes more and more at home in this sleepy rural town, and begins to wonder if he should give up his pursuit of success in the big city, and try to relax, and enjoy himself more. When he returns to Tokyo to finish his work, Hiromi and Makoto come to lure him back, but when he returns to the B&B, his boss and girlfriend Sakura likewise come looking for him.

Après s’être fait jeter de l’appartement de sa petite amie, Hiromi décide d’aller voir la mer. En route, il croise Kaito, un employé plein d’avenir mais qui, après avoir perdu un client important, a décidé de prendre des vacances. Le destin fait qu’ils vont travailler dans la même auberge au bord de la plage.

反町隆史演じる桜井広海と竹野内豊演じる鈴木海都が、ひと夏の休息の地を求めたどり着いた海辺の民宿“ダイヤモンド・ヘッド”。​

　その地で出会う和泉勝（マイク眞木）やその孫・真琴（広末涼子）、スナック“渚”の前田春子（稲森いずみ）らとの交流を通し、彼らは自身の人生と向き合い、友情を深めていく。​

　夏の海を舞台に男二人の熱い友情を描いた、色褪せない名作ドラマが、４K映像でより鮮やかによみがえる！​

여행길에서 우연히 만나 바닷가 민박집에 같이 살게 된 두남자 이야기

Depois de ser expulso do apartamento de sua namorada Fujiko, Hiromi, decide ir para o mar, no caminho ele conhece Kaito, um empregado de elite de uma multinacional de Tóquio, mas que está escapando de seus problemas depois de ter perdido um cliente. Logo eles terminam em uma praia onde as circunstâncias farão com que trabalhem todo o verão em uma pensão, junto com o dono e sua neta.