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.

In-joo travels abroad and receives an unexpected welcome, leading to more questions. In-hye and Hyo-rin attempt to help Sang-a, who's in isolation.

In-joo is in grave danger following an encounter with a mysterious visitor abroad. In-kyung offers to make a deal to save her older sister.

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.

During one sister's hearing, a bombshell courtroom appearance causes a stir. Emotions run high as lingering questions are finally answered.