Miss Granny

Mal-soon receives the news that she will be sent to a nursing home after Ae-ja's hospitalization, and the doctors urge the family to live apart. The revelation exposes the strain between her and her son and underlines her fear of losing dignity in old age. She confronts the implications of aging and isolation while clinging to her pride.

Wandering the city streets in a daze, Mal-soon stumbles upon a mysterious photo studio that claims to capture the moments of one's youth. The promise of reversing time entices her to step inside, not fully aware of what she is agreeing to. The encounter foreshadows the unbelievable transformation she is about to undergo.

After leaving the studio, she discovers she has been transformed into a fresh, 20-year-old woman. The unbelievable change shocks her, and she must decide how to proceed while keeping her secret. She adopts the name Oh Doo-ri, embracing a new life as a youthful version of herself.

To avoid being recognized, Doo-ri hides from her old life and finds shelter with a café worker who once served her family. The arrangement gives her a chance to live openly as a young woman while learning the ropes of a different life. The old family ties fade as she slips deeper into this new identity.

She renames herself Oh Doo-ri after her favorite actress Audrey Hepburn, and adopts Hepburn-inspired styling, including a similar haircut. Locals see only a bright, young woman who speaks with a regional accent and seems old-fashioned in some ways. Behind the makeover, she maintains a protective and maternal attitude toward those around her.

As the 'suspicious girl,' Doo-ri wows a group of pensioners with a stirring karaoke performance. Her blend of youth and warmth captivates the crowd and earns her unexpected admiration. This moment marks her first genuine public spotlight and hints at the path ahead.

Ji-ha, her unsuspecting grandson, and Seung-woo, a TV music producer, notice Doo-ri's talent and presence. Ji-ha invites her to join his heavy metal band, and Doo-ri persuades them to switch to more audience-friendly melodies. The invitation launches her into a music career she once had to give up.

Doo-ri finds herself torn between two men: Mr. Park, her devoted cafe-worker friend who has long loved her, and Seung-woo who pursues her professionally. Mr. Park's daughter becomes suspicious and forces Doo-ri to leave, sending her to stay with Mr. Han. The romantic entanglements complicate her balancing act between affection and ambition.

With Doo-ri at the mic, the band rises to success and is booked for an extravaganza at the studio. Ji-ha is delayed by traffic and ultimately leaves in a taxi or on a bike, trying to reach the show. Doo-ri performs with growing confidence, energized by the crowd despite his absence.

On the way to the performance, Ji-ha is struck by a lorry and falls into critical condition at the hospital. Doo-ri decides to go on stage anyway to celebrate the song's success and to send a message to him. The sudden accident heightens the tension between art and life and underscores the stakes of their pursuit.

At the hospital, doctors reveal that only Doo-ri has the correct blood type to save Ji-ha. She offers to donate blood, knowing it will reverse her youth and return her to her aged self. The transfusion becomes a poignant sacrifice that reshapes her future.

After the upheaval, Mr. Park discovers the same photo studio and undergoes the same transformation, becoming young and handsome. He finds Doo-ri at a bus stop and, in their familiar banter, they ride off together. The ending hints at new beginnings born from fate and the enduring pull of youth.