Dongeun’s end game comes into focus as she sends Jeon Jaejoon a troubling package and orchestrates a plan to take down Yeonjin and Lee Sara.

Yeonjin threatens Hyeonnam after discovering her involvement with Dongeun. Yeojeong devises a way to get the truth out of Yeonjin.

Already on edge over the past resurfacing, Yeonjin grows more anxious when she learns about her daughter’s new homeroom teacher — and of a sudden death.

Son Myeongo’s sudden absence causes tension in the friend group. Dongeun finds her trust in Kang Hyeonnam tested.