The episode opens with Mira , the titular “chechi” (Sister in Malayalam) and a former data‑archivist turned underground hacker, receiving a cryptic message: a file labelled “MIRROR”. The message is a call to action from Rohan , a charismatic whistle‑blower who claims the megacorp ViroTech is about to launch a neural‑interface upgrade that will render users’ thoughts visible to advertisers. The inciting incident is a classic “call to adventure,” but the series subverts expectations by immediately framing it as a personal betrayal—Rohan is Mira’s estranged brother, whose last contact was a bitter argument over their mother’s death.