It's been a few years now that [Y_N] and her Dream Knights separated, but , what happens when her new assistant is one of her Dream Knights? Will [Y_N] be able to accept that they're back or will she want nothing to do with them now that she has a boyfriend, Park Jiahn? When the Dream Knights find something suspicious about Jiahn, will they tell [Y_N] and risk their chance of ever becoming her Knights and Best Friends, or, will she believe them and choose to return to the way things were before they separated?