Kevin has always been an aloof, hardworking programmer who goes home to his cat. All he does is work and home and taking care of his weird, beloved feline who seems to be conversing with him with every meows. Lonely during his birthday which nobody remembered, he went home to his cat as always, slightly intoxicated. Moved by his loneliness, he lighted the candle of the chocolate cake he bought for himself, he wishes for his cat to be a person so he could have someone to really talk to. Unbeknownst to Kevin, the feline named Abey also understands every word he says and feel his emotions. She wishes the same, to become a person so that she could comfort him. But then, their wishes came true.
A demon and an fallen angel are set to battle dominion over a boy whom the prophecy foretold to bring the end of days. influencing goodness to the boy can stop the apocalypse. However, love comes in between as they try to nurture the child. One gives up the mission just to be with the other. But then, one's unexpected past changes everything.