222 is a pregnant woman named Kim jun-hee but jun-hee for short and she got pregnant by 333 but the 2 don't talk anymore and there comes 380 the girl named se-mi they only have each other because everyone betrayed them in mingle and you the girl that is an absolute sweetheart didn't even know them but you never spoke or betrayed them since you don't even know them so you now know them and have to gain their trust. And they don't trust people easily.