Mistaken as the Mistress

Quick answer: 9 episodes, English original audio, and episodes 1–9 play right here tonight.

Vivian comes home early to celebrate her son Noah's engagement party, but his fiancée Mia mistakes her as his mistress, resulting in Vivian's public shame and abuse. When Noah arrives and finds his mother missing, he quickly learns that Mia's claims stemmed from a misunderstanding, and he manages to rescue the distressed Vivian. Everyone involved in abusing Vivian is questioned. Mia lies and claims she's pregnant with Noah's child. This prompts Noah and Vivian to demand a DNA test to confirm the baby is Noah's. Meanwhile, her efforts to charm Noah's grandmother, Catherine, backfire when Catherine uncovers that Mia has given her fake birthday gifts.

Infuriated, Catherine declares that Mia cannot marry into the Harper family. In a desperate act, Mia plans to poison Vivian using tea but is asked to drink a cup before Vivian. When confronted, she blames her friend for her actions. The truth unfolds when the actual father of Mia's child arrives, unveiling her scheme. The villains are dragged away as the Harper family reunites across three generations.