The elder sister feels very sick, groaning on the sofa. But the younger sister turns a deaf ear to her request of help. They had arguments before, so the younger sister decides not to help. The elder sister goes into a coma. In the emergency ward, the younger sister feels very guilty and cannot help shedding tears ...姊姊臥病在沙發上,不斷呻吟,想請妹妹幫忙電召救護車。妹妹卻置若罔聞,只顧使用電腦。原來兩姊妹曾有過節,妹妹當時發燒,想請姐姐給她一杯水喝,姐姐不但不理會還出門玩樂去。此事令妹妹懷恨在心,見死不救。姊姊終於不省人事;急症室裡,妹妹回想前事,十分內疚,不禁潸然淚下……