送肉粽是台灣彰化沿海一帶的習俗，將上吊亡者的煞氣送走。廖士涵首拍劇情長片，挖掘出台灣這個怨氣最重的送煞儀式，習俗結合反霸凌議題的題材，拍出台灣特有的民俗驚悚片，結尾更充滿懸念。家維為籌錢結婚，決定拍攝神秘送肉粽儀式放至網上，打算藉高瀏覽量賺廣告費。他甚至進行人肉測試探究是否真有亡靈存在，更把女友書儀牽扯進來，才驚覺事件的源頭竟然來自於「她」!生人迴避，活人玩心機，鬼后夏于喬有大量壓抑秘密與恐懼的內心戲，詮釋中邪樣貌令人印象深刻，陳博正扮鬼王鍾馗，驅邪送煞宛如真實法師，上吊女鬼李亞臻的復仇十年未晚，《粽邪》繼《紅衣小女孩》之後再創寶島恐怖類型片流行經典。

Taiwan urban legends suppose that when someone commits suicide by hanging, a curse remains in the rope. A ritual to burn the rope must be performed in order to eliminate the curse, and anyone who even looks at the burning may be cursed. Director Liao Shih-han brings this controversial ritual to the big screen in this atmospheric and terrifying thrill ride. Looking for clicks, Internet vlogger Jia-wei travels to Changhua to capture the ritual on video. But when the ritual is ruined by a supernatural force, he opens up a decade-long grudge involving his girlfriend Shu-yi that must be resolved once and for all.