Eva (Charlene Choi) and Adam (Pakho Chau) have been dating for more than ten years, but they suddenly broke up because of a trivial matter. Adam, who was broken up for no reason, had sex with his student Mandy (Michelle Wai) after drinking. But then Mandy accidentally found a book in Adam's house that recorded 77 heartbreaks written by Eva. The book was full of Eva's repeated hurts... Adam felt guilty and mustered up the courage to apologize to Eva in front of everyone. Unexpectedly, Eva found Mandy's belongings in Adam's house... Can she forgive Adam for the 78th time?