A desperate 35 year-old Young-sil is more than ready for full time job. And finally she gets a call from National security department as an intern. But her joy lasts no long, soon asked to leave. Accidently she discovers a secret about her boss and she suggest a deal of full time job to help him; secret spy.

Suffering from the worst of interpersonal gipijeung the timid woman ‘Shallow Water’ (gohyeonjeong) 50 billion dollar crime errand at a time of winning Sister torrefy bent! Aka ‘write’ referred to as the love of her life, because somehow met five men behind it turns ….