Mina has a dark side in her life, a small innocent Chaeyoung tried to get know Mina after a sudden encounter in a cafe. Will she survive another world where she never been before?

Marriage Life!! Risky! Risky! Wiggy Wiggy this is an emergency! Help me help me somebody help me coz i know i can't stop me. Would they control the desire that is growing on their hearts? Test their loyalty,by how they was tempted by their past lovers Myoui Mina and Son Chaeyoung,are already married they build a entertainment company that has a two CEO which is them As eunha and somi enter their lives again.

"One more step, I will never stop. I will always be on track" Part 1 of On Track Series