Quick summary
The Light the Dark is a 2026 Chinese series set in 1997 at a petrochemical plant. After a pipeline explosion on Project 713, siblings Chen Ying and Chen Shan start digging into why their father died. Episodes 1-5 are on 123kh now, with Khmer subtitles on by default.
Plot
In 1997 the Wugang petrochemical plant is heading into a major reform. Chen Ying, a young accountant, joins the supply department while her brother Chen Shan prepares to leave for work in Guangdong.
An explosion in one section of the Project 713 pipeline kills their father. The team pins the blame on him, so the siblings begin gathering evidence on their own while powerful people in the plant push back. The story is about fighting for the truth in a place where it is hard to know whom to trust.
Basic information
| English title | The Light the Dark |
|---|---|
| Year | 2026 |
| Genre | Drama, mystery, crime |
| Country | China |
| Episodes | 12 (as listed on our site) |
| Episode 1 runtime | About 45 minutes |
| Original Chinese title | Not confirmed |
Episodes
Note: episodes 1-5 are available now; 6-12 will be added over time. Meanwhile, browse the 123kh catalog.
Main characters
- Chen Ying: the young accountant in the supply department.
- Chen Shan: her hot-headed younger brother, fiercely protective of her.
- Qi Mo: the designer who takes on the Project 713 repair.
- Wan Yang: the powerful plant executive.
We have not confirmed the cast list.
Watching info
Start with episode 1, then episode 2, episode 3, episode 4 and episode 5. Every episode has 14 subtitle languages with Khmer on by default; tap "More" under the video to pick any other.
Frequently asked questions (FAQ)
What is The Light the Dark about?
A 2026 Chinese drama set in 1997 at a petrochemical plant, about two siblings seeking the truth after a pipeline explosion.
How many episodes are there?
We list 12. 123kh has episodes 1-5 now, with more to come.
Which subtitles are available?
Episodes 1-5 have 14 languages: Khmer, Thai, English, Arabic, Chinese (Simplified and Traditional), French, Indonesian, Japanese, Korean, Malay, Portuguese, Spanish and Vietnamese.
Do I need to start from episode 1?
Yes, ideally, since the truth comes out gradually.
Are Khmer subtitles the default?
Yes. Khmer turns on automatically and you can switch at any time.
Where can I find episodes 6 to 12?
They will be added to the 123kh catalog. Check back regularly.
Is it free to watch?
You can watch without signing up, subject to each episode page's terms.
Sources
Information from the 123kh episode pages and the content of episodes 1-5. This article is written by us; anything unconfirmed is marked as such.