宝（李克勤 饰）一直生活于庙街，小时候因为与母亲失散了而被老江湖杨合益收养了。一直受青梅竹马的何喜（叶璇 饰）照顾，两人感情就像兄妹。
一名家庭主妇英（黄淑仪 饰）突然出现在了宝的生活中，并坚称宝就是她当年失散的儿子，令无拘无束的宝不胜其烦。同时英做警察的儿子王文迪（梁汉文 饰）对阿宝十分反感，更因为误会与阿宝成为敌人。这时令宝更加不能接受的是，何喜一直暗恋文迪，宝只好黯然退出。
宝对英的态度虽然比以前缓和了，但英见两名儿子互相争斗，仍十分痛心。这时庙街里有权力之人在作威作福，宝决定带领自己的一众好友与文迪共同与恶势力抗争。

《日与夜》集合了马来西亚三位导演何宇恒、林丽娟、杨俊汉的三部短片，反映了他们对马来西亚社会现状的思考。
何宇恒〈门〉
女孩极度思念父亲，渐渐地情绪被一股无形的外在力量控制着。
林丽娟〈面包女孩〉
一名九岁女孩对爱的飢渴，从最基本的食物延伸到对性的幻想。当小女孩的渴望被满足时，她却感到如此害怕。
杨俊汉〈Bedside Manners〉
男病人瘫痪在床，被迫眼睁睁听着两个探病女人之间的聒噪。

A story about a careless mother and her lonely, insecure daughter. Eighteen year old Faye is always on the edge because of her mother's boyfriends. Her mother survives by running a beauty shop. Since there are only the two of them, they are very close and are at times like friends or sisters, but to Faye, her carefree mother is also like a child she needs to watch after. She is also plagued by rumors about her and her mother. Her anger reaches its limit when she learns that her mother is pregnant. Sadly, she can't do anything but endure reality and hope to escape her dull and depressing life.

A rites-of-passage film from Malaysia, Ho Yuhang's film takes a lyrical approach to a young man's recognition of the violence and harshness of life.