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Kim SunHee is a 26 year old girl and works at this small Coffee shop, she hates her job. SunHee got the job as part time job but she never left it. She wants to do more in her life and just job in a coffee shop, her big dream is to be the greatest Rapper in South Korea. But she doesn't know how to start her career.

But then one day she see that Show Me The Money 4 is going to start and she immediately audition to it.

And on her way to try to win Smtm4 she meets Jay Park. Will SunHee join team AOMG? Will the fall in love?