What if a total stranger offered you everything you wanted- almost?

Ever since Ara laid eyes on that sparkling 10K diamond necklace infront of Tiffany and Co's shopping window, she knew she
wanted it for Christmas. But how could she afford it with an income like hers? Being a 22 year old, single, art teacher who merely lived off 2 minute
noodles and instant coffee to fill her stomach, it was impossible for her to afford such luxury- yet alone, better food.

However when business tycoon, Kris Wu, first laid eyes on Ara on the streets of Seoul, and no she isn't a hobo, just simply a bystander who was 
window shopping, he knew he had found his target. He needed a nice, respectable women by his side and Ara seemed like the perfect candidate to help replace the lousy list of super models he had been with. 

So Ara accepts a bizarre business proposal- to be his girl. All she has to do is play 'happy couples' until Kris gets elected as CEO for
EXO enterprises, his father's company  then she'll receive a big fat cheque and a lifestyle to die for.

But how exactly did Ara accept the business proposal in the first place? Simple. 
He bought her the 10K diamond necklace.