If Yue Lao was really useful and loyal enough, then there wouldn't be so many crazy men, resentful women and unhappy marriages in the world.
Four good friends who were inseparable were tricked by a so-called "villain" who claimed to be Yuelao, but was actually just wearing this skin to deceive them. They accepted the task of going to the ancient world to break up CPs, with the purpose of breaking up some unhappy combinations, and started a different kind of journey...
Motto: Love is precious, it's fine without it