Ele and Tonya are celebrating their fourth anniversary, but what was going to be a romantic night will end up turning into the end of their relationship.
Jungwoo's re-upped resolve has led him closer to the top of the criminal enterprise responsible for his mother's death, but the revelations were not won without sacrifice.
The mermaid Jo has been whiling away her days in peace. But that tranquility is shattered when her friend Ryuu is locked away for breaking the gravest of undersea laws.
