In the year 2050, on a forgotten island hidden deep within the Pacific, stands a scarlet villa that looks beautiful from the outside — almost peaceful. Inside, it is anything but.
A group of girls live there in isolation, stripped of their memories and their pasts. They are not called by names, only numbers. Among them, Number 12 — An Xiao — is different. Though her memories are gone, something inside her refuses to disappear. A quiet instinct. A feeling that something is terribly wrong.
When she stumbles upon a corpse hidden in a storage room, that instinct turns into certainty. The villa is not a sanctuary. It is a cage.
Determined to uncover the truth, An Xiao forms an uneasy alliance with Lin Xi, another captive who clings to a single obsession: finding her missing sister, Number 07. Together, they begin to question the villa’s strange rules — especially the so-called “oxygen therapy” conducted at night. What they were told would improve their health instead triggers fragments of lost memories, surfacing through vivid, painful dreams.
The villa’s elegant owner, Lina, appears kind but distant — a woman making cold decisions under the psychological manipulation of Dr. Li Ming. He maintains control through a cruel system of “selection,” convincing the girls that only the chosen are worthy, while those ranked lowest quietly disappear.
When Number 5 is taken away, she throws an iris-shaped hairpin from a window — a desperate signal. Lin Xi recognizes it instantly. It’s identical to the one her sister once wore. Hope turns into urgency.
As An Xiao spirals into emotional distress and seeks medical attention, she makes a chilling discovery: a photograph of a girl who looks exactly like her hidden among Li Ming’s files. Her lost identity is not an accident. It is part of something planned.
Sneaking back into the storage room, An Xiao and Lin Xi uncover the horrifying truth. The girls are being used as living hormone donors, their bodies exploited and sold to powerful men chasing youth and vitality. Lin Xi’s sister, they learn, was “disposed of” after her body could give no more.
Grief and rage fracture their alliance. Lin Xi wants revenge — immediate and absolute. An Xiao, shaken by revelations about her own past, hesitates. The truth cuts deeper than either expected: An Xiao is Lina’s daughter — and Li Ming’s most valuable “perfect donor.”
What follows is not just rebellion, but heartbreak. Lin Xi attempts to assassinate Lina alone. In the chaos, she shields An Xiao and is anesthetized, falling before she can finish what she started. Lina, torn between control and motherhood, fights desperately to protect her child from the very system she helped sustain.
When An Xiao’s memories finally return in full, so does her strength. She chooses neither blind revenge nor submission. She chooses freedom.
In the end, the scarlet villa becomes the birthplace of something new. Not just escape — but redemption. The girls who were once reduced to numbers reclaim their names, their pasts, and their futures.
And from the ruins of manipulation and betrayal, they are reborn — not as victims, but as survivors.
