"I will definitely become the world's best Jazz player!" Blue Giant follows Dai Miyamoto, who is a member of the basketball club. While attending junior high school one day, a friend takes him to a live jazz performance, which inspires him deeply. Thereafter, he begins practicing the tenor saxophone by himself, without the ability to read sheet music. Rain or shine, day or night, Dai continues to practice. During his first performance, he is criticized by the audience, however, Dai passionately blows away at his saxophone. A tale of reaching his goal recklessly and sincerely begins.

Taking place after the events of Heaven and Earth and before Exodius, Behind the Line depicts the moments of boys and girls after Soushi Minashiro returned home.

Nobita and his friends embark on a quest to find an ideal land called Paradapia, similar to Thomas More's Utopia. Guided by Doraemon's futuristic gadgets and time-travel abilities, they uncover Paradapia's secrets and face challenges, including encounters with a bounty hunter named Marimba. The story revolves around their efforts to unravel the mysteries surrounding Paradapia, leading to a positive resolution and the anticipation of future adventures.