When college student Keiichi Morisato dials the wrong number while ordering for some food at his dormitory, he accidentally gets connected to the Goddess Hotline and a beautiful goddess named Belldandy appears out of a mirror in front of him. After getting kicked out of the dorm, Keiichi and Belldandy move to an old shrine and soon afterwards, Belldandy's sisters Urd and Skuld move in.

Mysterious immortal humans known as Ajin first appeared 17 years ago in Africa. Upon their discovery, they were labeled as a threat to mankind, as they might use their powers for evil and were incapable of being destroyed. Since then, whenever an Ajin is found within society, they are to be arrested and taken into custody immediately. Studying hard to become a doctor, Kei Nagai is a high schooler who knows very little about Ajin, only having seen them appear in the news every now and then. Students are taught that these creatures are not considered to be human, but Kei doesn't pay much attention in class. As a result, his perilously little grasp on this subject proves to be completely irrelevant when he survives an accident that was supposed to claim his life, signaling his rebirth as an Ajin and the start of his days of torment. However, as he finds himself alone on the run from the entire world, Kei soon realizes that more of his species may be a lot closer than he thinks.

Air Trecks, also known as AT, are motorized and futuristic inline skates that are the new craze taking the nation by storm. Although each AT comes with a speed limiter, a community of daredevils known as the Storm Riders are brave enough to tamper with the device. Utilizing AT's in underground battles, individual teams wager valuable AT parts or team emblems—their symbol of pride—to dominate the streets. Living in this era is Itsuki Minami, a middle school student notorious for engaging in street fights. Always wanting to reach heights no one else is able to, the reckless punk will break through any obstacle that stands in his way, alongside his best friends Kazuma Mikura and Onigiri. However, it is when he discovers a pair of Air Trecks in his house that the path to his true desire finally opens: to rule the skies.

Lacking what is considered the most important asset in basketball, Sora Kurumatani has struggled with his short height since the inception of his love for the game. Despite missing this beneficial aspect, Sora's unwavering drive never allowed his small stature to dictate his ability to play, believing strongly in trying his hardest and persistently practicing to prove his capability. In hopes of satisfying his mother's wishes, Sora enters Kuzuryuu High School to become a member of the basketball club and compete wholeheartedly in tournaments. However, Sora is disappointed to find out that the boy's basketball team is nothing but a retreat for punks who have no interest in the sport. Sora also comes to learn that brothers Chiaki and Momoharu Hanazono—whom he becomes acquainted with—have also lost their once spirited motivation to play. Determined to revive the basketball team, Sora challenges the boys to a match against him, where his quick feet and swift movements overwhelm the group. Gradually affected by Sora's impressive skills, sheer effort, and tireless devotion to basketball, the boys unexpectedly find their burnt-out passion for the game rekindling once again.