The DramaNext guide
What Vow of the Longevity Lock is about
Abandoned at the altar by her scheming fiancé, she is saved from public humiliation when a powerful billionaire steps in and marries her on the spot. Showered with love, she soon conceives. But her bitter ex returns, claiming her new husband is sterile and branding her unborn baby a bastard.
It runs 86 short episodes on iDrama and leans on CEO romance, billionaire and marriage drama tropes, with each episode ending on a hook.
Is it worth watching?
The draw here is the power gap between the leads and who ends up holding the cards. On top of that: the hidden-wealth reveals and the people who misjudged the lead.
At roughly 2–3 hours in total, it's quicker to finish than most full-length series.
How to watch it
Press play on episode 1 and DramaNext moves on to the next one by itself. No account and nothing to install. It was added to DramaNext on Oct 26, 2026.
