Lou Lap (2015) on Netflix

Plot summary

Ping has no money and no prospects, so he takes the only work he can find: the overnight shift at an Exceed convenience store. His employer, Fat Boss, is unpleasant, and Ping decides to amuse himself by getting back at him. Mabel, the other clerk, joins in the mischief. Through the night the store draws odd visitors: Yan, a passerby who needs the toilet; Anita Chan Tsz-Ying, a young woman in a cheerleader's outfit who asks for condoms; and Grandpa, who wants a sandwich and some large scissors. The Exceed convenience store then turns into the site of a robbery.