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Mobius concluded its 16-episode run on September 21, 2025. Starring Bai Jingting, Janice Man, and Song Yang, the series blends crime, science fiction, and action, featuring time resets and a central mystery. Based on Zhang Xiaomao's novel Ni Shi Zhen Cha Zu (逆时侦查组), the story of Mobius follows Detective Ding Qi, who gains the ability to relive the same day multiple times.
As he navigates this power, his investigation takes a turn when a murder notice linked to a figure known as "X" or "Squid" emerges. By the end of Mobius, Ding Qi briefly loses his time-loop ability, but the final scenes show him looping again, leaving his fate unresolved.
Mobius ending explained: Ding Qi’s battle with time, truth, and the endless loop
Mobius is the story of Detective Ding Qi, a man who carries both a curse and a gift. His life changes 8 years ago when he nearly drowned and is unknowingly exposed to traces of the experimental RAN drug. That accident has given him the ability to relive the same day up to 5 times.
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At first, Ding Qi stumbles through this strange power. He fails over and over to stop a robbery at Fortune Bank. Each time, he watches lives being lost, buildings exploding, criminals escaping. But every loop leaves him wiser.
By the final cycle he masters the situation, tricks the robbers with fake money, coordinates the police, and saves countless people. That is the moment Ding Qi finds purpose in his loops. He enters the police academy not as a man gifted with supernatural ability, but as someone determined to dedicate his life to protecting others.
His new path leads him into deeper mysteries when executives at Moma Biotechnology begins dying in suspicious accidents. Some are electrocuted, some gets killed by a falling billboard but none are coincidences. These are attacks tied to a hidden figure known only as Squid.
Ding Qi leads a special task force, posing as Moma employees to guard CEO Mo Yuanzhi. He carries out detailed surveillance, planning protective measures, and working tirelessly to shield his colleagues. Among them are his girlfriend An Lan, who is devoted to save her comatose mother through the very research Moma is conducting on neuronal repair.
But time will not leave Ding Qi alone. The loops returns during Mo Yuanzhi’s public appearances, most notably at the a family wedding. Ding Qi anticipates disaster. He has already lived through it once before. The explosion that kills Mo Yuanzhi and his officers comes again, forcing Ding Qi to relive the event.
Each loop is different. In one, he saves a colleague while in another one, he stops a kidnapping. Every change reveals new threads in the mystery.
Surveillance exposes Ye Kun, a man in a clown mask, linked to multiple crimes. Ding Qi’s team digs deeper and uncovers not just Ye Kun, but a web of corruption, betrayal, and rivalries inside Moma Biotechnology.
The loops are never simple repetitions. They are shifting, unstable, as if someone else is pulling the strings. Ding Qi begins to suspect that Squid is not only watching him but also perceiving the loops and twisting them to mislead him.
Maggie, an American investor who arrives negotiate with Moma, further complicates the timeline. She seems to act independently of the resets, raising a possibility that she is tied to someone orchestrating events from outside the loop.
As the investigation deepens, Ding Qi uncovers grim truths. Ye Kun, once known as Feng Qiming, has been jailed in 2008 after a deadly street fight. His sister Feng Wanqing, years earlier, has undergone illegal RAN drug trials that briefly restores her health before destroying it.
Mo Yuanzhi, obsessed with her, has concealed his failures and continues his experiments. Ye Kun becomes his pawn, manipulated into killing the executives under the false promise that it will help save his sister. Ding Qi exposes the manipulation, but Ye Kun falsely confesses to protect Mo.
Then comes the revelation that changes everything. Jiang Yuwen, Mo Yuanzhi’s former mentor, who is believed to have died in a lab explosion in 2016, is still alive. Jiang is also a loop perceiver but unlike Ding Qi, his side effects are brutal.
His body has aged at an unnatural speed. It is Jiang’s experiment with the RAN drug that had first created the chain of events leading to Ding Qi’s powers. Maggie is his daughter which links her directly into the conspiracy.
As the truth unravels, Ding Qi sees the cost of the loops. Every perceiver is broken by side effects. Ding Qi feels his body failing from the endless cycles but, he pushes forward.
He discovers Mo’s secret lab, where Wanqing’s body is preserved. He uncovers urveillance that ties Mo to abductions and murder. He stops bombs, saves Maggie, and fights Mo in a brutal showdown.
The final answer lay in the RAN drug itself. It attacks the weakest part of its users. Jiang Yuwen’s weakness is aging. Mo Yuanzhi’s is his eyesight. Ding Qi’s is his physical endurance. During the last confrontation, Ding Qi collapses, his body giving out under the pressure of his loops.
He would have died if not for An Lan. She has been working on a treatment and gave him an antidote. It revives him but also strips away his looping ability. For the first time in years, Ding Qi is freed from repetition. He can finally live in a straight line of time.
For a brief moment, peace returns. Moma Biotechnology is rebuilt under new leadership. Jiang Yuwen reconciles with his daughters before being saved from a bomb. Mo Yuanzhi, blind and imprisoned, seems defeated.
Ding Qi, no longer a perceiver, is alive and whole. But soon, Mo Yuanzhi escapes from prison. And just when Ding Qi thinks his looping days are behind him, the cycle begins again.
Mobius's ending leaves Ding Qi suspended between hope and dread. His power is meant to be gone, but the loop returns, proving that fate itself is bound in a Mobius strip. For Ding Qi, the war with time and the battle against those who twist it has only just begun.
Is there a possibility of season 2 of Mobius?
As of now, there has been no official confirmation regarding a season 2 of Mobius. However, the ending leaves Ding Qi unexpectedly back in a time loop, Mo Yuanzhi has escaped prison.
Additionally unresolved mysteries around Squid and other perceivers remain, setting the stage for new conflicts. So there is a possibility for a season 2 of Mobius.
Mobius has released all its episodes on iQIYI, while Netflix users can catch episodes 15 and 16 on September 23 and 24, 2025.
