Just as Min Joon and Song Yi settled into marital bliss, a chain of events start unfolding to distrupt their daily life; Jae Kyun reappearerd as a threat once more, Song Yi experience motherhood, and Min Joon need to deal with the reappearance of his kind...his life partner Ahnya.  Meanwhile Hwe Kyung got himself entangled in Ahnya's mission.  The universe have more suprises in store for Min Joon as a deep-dark secret he's been holding back from Song Yi started to emerge.  Min Joon and So