4 epsEpisodes4 episodes · 1–4 free here
Free on Back'n'Time
The story
Quick answer: 4 episodes, English original audio, and episodes 1–4 play right here tonight.
On the surface, Sloane Sterling is a wealthy heiress studying abroad, but secretly she is the 'Dragon Lady' who controls the underworld, striking fear into the hearts of all powerful figures. When she receives an urgent summons from her family, she temporarily leaves the bloody chaos behind and returns home to fulfill her engagement to the Houghton family. However, beneath the calm exterior, undercurrents stir. Sloane Sterling unexpectedly uncovers a cruel truth: her fiancé, Chance Houghton, has long been abusing her sister and has been coercing her with the threat of exterminating their family. Fueled by accumulated rage, Sloane Sterling drops her disguise and, in front of everyone, bares her fierce fangs, striking down the scumbag fiancé with overwhelming force.
This act completely enrages Victor Houghton, the head of the Houghton family. Facing the relentless counterattack and deadly siege from this established wealthy family, Sloane Sterling refuses to yield an inch. With absolute force, she breaks through layers of deadly traps, massacres the Houghton mansion, and uproots the entire family. When a king's fury rises, blood flows freely. In this bustling city, Sloane Sterling proves with iron and blood who is truly invincible in the human world.
- Episodes
- 4
- Language
- English
- Free here
- Episodes 1–4
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Questions people ask
How many episodes are there in UNDERGROUND HEIRESS?
UNDERGROUND HEIRESS has 4 episodes in total. Short dramas run about one to two minutes an episode, so it is an easy one-sitting binge. Episodes 1–4 play right here on Back'n'Time.
Can I watch UNDERGROUND HEIRESS for free?
Yes — the first 4 episodes are free to watch on this page, no account and no sign-up.
What happens after episode 4?
Tap episode 5, or any tile with a lock on it, and we hand you over to the official app at that episode. If the app isn't installed yet, you'll land on its store page first. We don't host the locked episodes and we never ask for payment details.
What's UNDERGROUND HEIRESS about?
The story section above has the setup without spoilers past episode 4.
What language is UNDERGROUND HEIRESS in?
The audio is English. It was added to Back'n'Time on Oct 9, 2026.
Episode 5 continues in the app
You've watched the free part. UNDERGROUND HEIRESS carries on in the official app — we'll open it at this episode.
Continue in the official appKeep watching 1–4