Park Chang Ho (Lee Jong Suk) discovers Go Mi Ho's (YoonA) illness after she stepped up and reveals Choi Do Ha's (Kim Joo Hun) involvement in the NK Chemicals in "Big Mouth" Episode 16. Will she recover?

'Big Mouth' Episode 16: Election Debate Turns Upside Down for Choi Do Ha & Park Chang Ho

Choi Do Ha has all the cards to use against his opponent, Park Chang Ho. He even sabotaged the whole debate to grill Park Chang Ho. However, it became a fierce battle for both as they prepared strong evidence that could ruin their candidacy.

Choi Do Ha mentioned Park Chang Ho's relation to the virtual currency fraud case. He asked if the lawyer will withdraw his candidacy if he is proven guilty of it.

The lawyer answered it bravely and said that he would take responsibility and step back.

In his attack, Park Chang Ho discussed the NR Forum and its newfound formula NF9. As a supporting document, he presented the news article published in 1992, which said that Jo Hae Soo, the developer of NF9, committed suicide.

Go Mi Ho Reveals Herself as Victim of NK Chemicals

Meanwhile, Go Mi Ho, Jerry (Kwak Dong Yeon), Chairman Yang (Song Kyung Cheol), and his people went to the fish farm. They discovered that the wastewater from the underground water chemical part was generated during the NF9 purification process, and a lot of radioactive material was mixed.

After collecting all the evidence at the fish farm, Go Mi Ho and Jerry headed to the broadcasting station. They sent a video containing the testimony of the fish farm owner to Kim Soon Tae (Oh Eui Sik). Go Mi Ho arrived and participated as a citizen representative.

Go Mi Ho then revealed all about the illegal work that Choi Do Ha did. This time, Park Chang Ho found out that his wife was diagnosed with acute lymphoma. Everyone was shocked by Go Mi Ho's revelation. This also caused Choi Do Ha to be investigated in court.

RELATED ARTICLE: 'Big Mouth' Episode 15: Mayoral Race Between Lee Jong Suk & Kim Joo Hun Begins

Though Choi Do Ha won the election, his wife Joo Hee (Ok Ja Yeon) couldn't remain silent about her husband. She sent his burner phone to Go Mi Ho to use it against him.

However, on the day of the trial, she didn't show up to testify against her husband, which made Choi Do Ha win the case.

Go Mi Ho Dies While Park Chang Ho Hailed as New Big Mouse

Go Mi Ho collapsed after the trial and was rushed to the hospital. Park Chang Ho stayed by her side until she woke up. Unfortunately, minutes later after their bittersweet conversation, Go Mi Ho passed on.

Park Chang Ho, on the other hand, went to Choi Do Ha and watched him die after consuming the NF9 chemical that was placed in the pool.

He rescued Hyun Joo Hee, who was imprisoned by Choi Do Ha and was able to prove the correlation between NF9 and Gucheon cancer patients through Seo Jae Young's papers.

The VIPs were sentenced to 10 years in prison. Gong Ji Hoon (Yang Kyung Won) took office as the CEO, and Park Chang Ho anonymously donated a large amount of money to the orphanage and nursing homes of Gucheon City.

Park Chang Ho then became the new Big Mouse and recalled what Go Mi Ho wanted him to be.

"I want you to become a good Big Mouse. A kind and righteous Big Mouse."

IN CASE YOU MISSED IT: Hate Kim Joo Hun? 'Big Mouth' Villain Has People Cracking Up With His Reaction To Angered Viewers

Were you satisfied by "Big Mouth" Episode 16? Tell us your thoughts in the replies/comments!

For more K-Drama, K-Movie, and celebrity updates, follow KDramastars on Twitter and Facebook.

KDramastars owns this article.

Shai Collins wrote this.