In a world where everyone and everything is ranked by their power and family status, love is practically impossible. A commoner cannot even look at a higher rank, much less fall in love with them. A higher rank cannot treat a commoner any more than a slave. Marriages aren't out of love, but out of one's desire for power. That is the demon world - Hell. And in Hell live 7 "perfect" demons, known as INFINITE. They all have the same mother but 4 different fathers. Polygamy was not uncommon in Hell. After all, it's hell. The demons in INFINITE were basically treated like Gods, well...more like Lucifers, because their enemy was God..and Hell's ruler is Lucifer. But, they were stuck up, cocky, arrogant, rude, and just pure irritating.

Then, there's the angel world - Heaven. Everyone is equal and they treated each other with utmost respect. Power and rank didn't matter but if you were more powerful than others, you worked right beside God and protected everyone else who had less power. And just like Hell had their own 7 shining diamonds, Heaven had their very own as well - Teen Top. But instead of 7 males like INFINITE, Teen Top had 6 males and 1 female - Park Yeona. Yeona isn't a pure angel; she's the love-child between an angel and a human, and that was uncommon, because Angels marry Angels, not humans; but because she was different, she stood out to God, and that's when she meets Teen Top, who were already beside God for a while when she joined them. Other angels called Teen Top and Yeona "Perfectures," because whenever there was a top secret mission down on Earth, God sent those 7. God had an unlimited amount of trust and faith in these 7, and they have never failed him, or a mission. They always came back to God to report everything about the mission.

Everything went smoothly. Until, God sent the 7 on a super-secret mission. On Earth lives a love-child between an angel and demon, Luhan. God sent the "Perfectures" down onto Earth to protect the love child and bring him to God. But in Hell, INFINITE received the same mission, but to kill Luhan. Because the demons don't want their precious demon blood AND the poisonous angelic blood to run through the veins of anyone. So, the two groups unknowingly register to be a student at Seoul National High School (SNHS).

This is where their story begins.

"If two people are meant to be together, eventually they'll find their way back."

Credit to NIGHTS OUT for the poster and background !