In an alternate universe where souls are bonded and everyone has a "protector" That they are bonded and your heart turns gold, pure gold and the murderers that murderer bonded souls for their golden hearts to sell nicknamed "golden heart murderers' are out to get their hearts at anytime they wanted what happeneds when they are looking for four certain bonded souls yazmui a 17000 year old 9 tail fox but sadly, her other 8 tails had got cut off by the golden heart murderers and she loves being a "protector"and her power is a song in which she uses to protect her bonded soul and herself. her bonded soul orchid a sweet shy and nerdy girl from China, she has been bonded with since she was born and she would do anything in her power to protect this girl, she loved her like a little sister and her heart is fully gold because she's a very kind and sweet soul. Su wong 19000 year old demon wolf robot even though he was once evil demon spirit he's seen what he has done was wrong, his power mind manipulation he could get into the human brain and make them do anything, he wanted a little persuasion in which he uses for good now to protect himself and zhi,even though he thought being a protector, was stupid that the humans just going end up dying anyways but his whole perspective changed when he got bonded with zhi after he was built, a sweet kind caring and soft robot boy with a sweet and soft mechanical voice, he couldn't help but have a soft spot for the boy and he would do anything to protect him, because he loves him like a little brother, even though his heart isn't fully golden because of the fact he was a evil spirit so he still has an evil side to him he also wants to protect the boy because he's innocent and pure and he tries not to put evil thoughts in the boy's head sometimes it happens and he can't control it. orchid and zhi are best friends and they would do anything to protect each other while their protectors trying to protect them will love blossom between them?