21歲的宜安和5歲的宜靜與母親淑芬搬回台北，在夜市開麵攤。宜安反感麵攤生活，選擇在檳榔攤工作，卻因此發生一段關係。同時，宜靜被外公告知她的左手是"魔鬼的手"，開始四處偷竊。淑芬則面臨經濟壓力，背負額外債務。宜靜得知母親困境後，決定用她的"魔鬼的手"來幫忙。宜安發現宜靜的謬論和不良行為，認為淑芬缺乏母親責任。在外婆生日宴上，揭露一些家庭秘密，淑芬和宜安面對長久的衝突，正視彼此需求，努力重建家庭。

A single mother and her two daughters return to Taipei after several years of living in the countryside to open a stand at a buzzing night market. Each in their own way, will have to adapt to this new environment to make ends meet and succeed in maintaining the family unity.

Three generations of family secrets begin to unravel after the youngest daughter who’s left-handed is told by her traditional grandfather to never use her “devil hand”.