On Christmas Eve, Hiro Hirono runs into Miyako Miyamura, a frivolous girl who "borrows" his bicycle in order to chase down a purse thief. After Hiro finds his bicycle wrecked and Miyako unconscious, the two unexpectedly spend their Christmas Eve together, and when they discover they go to the same high school, their accidental relationship develops even further. This sparks the jealousy of Hiro's childhood friend Kei Shindou, whose pure approach to life catches the eye of Kyosuke Tsutsumi, a womanizing photographer searching for the perfect shot. Elsewhere, Renji Asou, a boy who dreams of being a girl's knight in shining armor, has a chance encounter with Kei's twin sister—the overly shy Chihiro Shindou, who spends her time reading alone—at an abandoned train station. The two quickly become friends and eventually decide to write a novel together. However, when Renji discovers Chihiro's secret, a disability that causes her to have an eternally ephemeral memory, his childish ideals will be put to the test. Guided by two mysterious adults, these youths' relationships intertwine in a heart-rending tale of love, rejection, acceptance, and memories.

In the future, age is not a factor to determine whether someone can perform a certain task or not, but special talent and training. An organization, Machine Robo Rescue (MRR), was established for robots and children to become partner and rescue people from danger. Then 12 children with various abilities were selected and introduced as part of this program: Robo Rescue! Meet Oozora Taiyou, one of the children who were chosen as a part of MRR program. After being late on his first day of training, he went to perform a hot rescue with JETROBO. However, a mysterious Robot from mysterious organization, "The Star"(?), appeared before MRR team to interfere with the rescue. What are the motives of the mysterious organization? And what are their goals? Life as one of the children chosen as part of MRR has started for Oozora Taiyou. Bumpy and hard training is just ahead for MRR team in order to protect many people's life!

The four episodes are set in Southtown, the imaginary city well known to all fans as the stage of numerous death matches throughout the KOF series. Many past heroes of the saga make their appearance here, and the four plots intertwine to create a large-scale drama, that is also linked to the story of KOF Maximum Impact 2.

It is rumored in the martial world that a mystery white-haired girl suddenly appeared around the thief Feng Ling Er. She is so powerful that many martial arts masters can't defeat her. The girl's identity, the source of her power and her influence to the world all caused discussion among the public. But Feng Ling Er and the white-haired girl named Bai Yu Xiu never care about it. They travel the world with pleasure, unaware of a great conspiracy coming towards them.