After witnessing a surprising moment between Park Ki-se and Mi-kyung, Baek-ho learns the truth about her past — leading him to confess everything.

Feeling betrayed by Baek-ho, Mi-kyung shuts him out. But as the tension between the two escalates, their colleagues scheme to reconcile them.

Mi-kyung's lab days dwindle, leaving her future with Baek-ho uncertain. What will their next chapter hold?