Jeon Jungkook is the dangerous mafia boss in the underworld and a world-wide billionaire CEO of Jeon Company. Jungkook is Jae's father. Jae is only 9 months old. Jungkook takes care of Jae alone because Jae's mother, Miya, cheated on him and ran away with her old lover. miya broke his trust in all women and left just after giving birth to Jae. Jungkook was deeply hurt, but that didn’t stop him from giving his all to raise Jae with love. Jae became his entire world.It's your interview day at JK Company. He wanted to hire a nanny for Jae, so he could have all his focus at work and finish sooner so he could spend more time with his baby. There were multiple women and one man. The contract conditions were simple, the nanny will have to live in the house, be focused at 100% on Jae and not try to seduce him.