Momoko is a high school student residing in the quaint town of Shimotsuma, Japan. After her father ran into legal complications from selling counterfeit clothing, she was compelled to leave the bustling city behind. As the sole lolita in her community, she finds herself without friends, yet remains unfazed, believing that her vibrant lolita wardrobe is all she requires for happiness. Her ultimate obsession lies with obtaining pieces from her favorite boutique, Baby, The Stars Shine Bright.
When her funds dwindle, she opts to sell some of her father’s old goods to make ends meet. This decision catches the eye of Ichigo, a member of a fierce all-female biker gang, who visits to purchase some of the bootleg clothing. Ichigo is thoroughly impressed and quickly returns almost daily to buy items for her gang. A beautiful friendship blossoms between the two as they embark on a thrilling adventure to the Baby, The Stars Shine Bright store in Tokyo. Here, Momoko has the opportunity to meet the brand's designer, modeled after one of its real-life founders, Akinori Isobe. Her prowess in embroidery leads to her being recruited to create a dress for the boutique.
Meanwhile, Ichigo's life takes a turn when she meets a gangster with a stylish pompadour at a pachinko parlor, and finds herself smitten. However, she soon learns that he is engaged to her gang leader, a revelation that deeply disturbs her. Following the marriage of their leader, Ichigo faces the daunting prospect of a new hierarchy. Discontent with the forthcoming changes and the direction the gang plans to take, she resolves to leave.
As she grapples with heartbreak from her unrequited love and draws inspiration from Momoko's spirited independence, Ichigo accepts a gang initiation challenge which entails a brutal beating. Determined to help, Momoko intervenes by intimidating the gang members with a facade about being the daughter of a notorious gangster. Her bluff is successful; she is regarded as the victor, and the two girls escape together, their laughter echoing in the air.
Ultimately, when the moment arrives for Momoko to showcase her embroidery, she impresses everyone with her timely arrival and exquisite work. But she realizes that the joy of wearing the clothing far outweighs that of creating it. In a parallel turn of fate, Ichigo's magnetic presence earns her a modeling opportunity with Baby, The Stars Shine Bright after leaving a significant mark on a cameraman. Even after unintentionally causing some minor injuries to crew members on her first day, she becomes a hot commodity for other fashion brands.
The film concludes on a heartwarming note, with an image of Momoko and Ichigo joyfully riding down the road, laughter filling the air as they embrace their newfound paths.
