Reeling from recent events, the sisters must look further into the past in hopes of finding the truth. In-kyung unlocks a secret. In-joo hatches a plan.

Park Jae-sang faces a threat. With some help, In-hye and Hyo-rin set out to start fresh. In-kyung finds her own way of shining light on the truth.

Jae-sang makes a drastic move. In the aftermath, the sisters face the wrath of familiar adversaries, newly emboldened with great power.