在这部幸福爱相随爱情片中,电影由三个短片组成。
一次偶然中，高三男生阿耐于深夜的校园中结识了名为小彬的男子，小彬的个性活泼开朗，十分健谈，很快，两人就成为了无话不谈的好友。巧合的是，小彬暗恋着的女孩恰好是阿耐的朋友，有了这重关系，阿耐和小彬之间的话题更加投机。然而，一个谁也不愿意点破的秘密隐藏在黎明来临前的黑暗天空之后。
阿珍的丈夫去世了，整个家庭的重担和照料外甥一家人的生活压力全部都落在了阿珍的肩头。唯一能够安慰阿珍的，就是丈夫散落在家中各处的纸条，凭借着这些纸条，阿珍坚信丈夫在天上依旧陪伴着自己。然而，某一日，外甥的妻子却将这些纸条付之一炬。
裴雅与凌是即将步入婚礼殿堂的新人，两人来到裴雅的故乡清迈，准备在这里举行婚礼。然而，在这里，裴雅意外的遇见了初恋情人阿贝，就此勾起了她对过往感情的回忆，夹在两个男人中间，裴雅会做出怎样的选择？
Set in Chiang Mai, the film consists of three continuous segments, each focusing on a group of characters whose relationships are revealed in the third segment. In the first segment, recent secondary school graduate Nay (Chutavuth Pattarakampol) is taking photographs of his school campus at night when he meets a younger student acquaintance, Beam (Kittisak Patomburana). The two talk about their experiences, relationships and plans for the future, but have to part as morning comes. The second segment tells the story of widow Buajan (Penpak Sirikul), who continues to find notes left by her late husband (Witoon Jaiprom), which keep her bonded to his memory but also prevents her from moving on. The last segment centres on the wedding of Chiang Mai native Preeya (Siraphan Wattanajinda) and Leng (Ruangsak Loychusak), a businessman from Phuket. Problems arise on the wedding day after Preeya has an encounter with her ex-boyfriend Pek (Supoj Chancharoen), although she is supported by her aunt (Puttachat Pongsuchat) and brother (Witwisit Hiranyawongkul).
如果幸福 如果爱 （此文冗长，慎入！！）。有趁黑偷偷掉眼泪。关于第一段的简短个人感触及解析。胖子又赢了。看不透的清纯。流水账。阿耐与小彬之间的几个细节。连我这种腐女都没有被打动。拥抱幸福拥抱爱。“你”在的地方，就是“我”的家。
