The story follows an elite team of thieves, sent by a notorious treasure hunter from the real world to the animated realm to steal each universe’s most prized and powerful item. On learning of this evil plan that would destroy the cartoon world, the bear brothers, along with Logger Vick, join forces with a sassy archaeological robot and set out on a journey to save their world and find the Deer Clan’s legendary Golden Antlers before the villains do. From Pine Tree Mountain to the mysterious Deer Clan Forest, this ragtag group encounter many strange and wonderful creatures, including the keeper of the forest, a magical woodland girl from the Deer Clan. Time is running out! Who will make it to the Golden Antlers first? Will the Boonie Bears’ World be saved? Follow us down the portal on an unforgettable adventure through these entangled worlds!

To follow in his missing friend Masato's footsteps, Ryo joined the vehicle company Yaesu. Ryo became involved with the Makuhari test course that Masato was also a part of. The leader, Gray Gear, told Ryo, "If you want to know about Masato, come to the test course late at night and ride the new machine." When Ryo got in the new machine, the Vector Versus, and rode it around the course, he was able to exceed 300 kilometers per hour and suddenly warped into a mysterious space!

In 2019, following an uprising in the USA and a subsequent global nuclear war, humanity was decimated by a catastrophe called "The Maelström." A half-century after this cataclysmic event—to preserve humankind—the World Health Organization (WHO) has progressively assimilated worldwide political power and completely redefined society: people are now considered public resources and are guaranteed a happier life. The heightened development of medicine, nanomachine technology, and augmented reality promote this greater devotion to human health. Suffocated by the excessive kindness of Japanese society, high school student Miach Mihie decides to oppose the societal values she considers dehumanizing before the health implant surveillance system WatchMe activates itself the day she turns 18. Miach plans to kill herself with two of her friends, Tuan Kirie and Cian Reikadou. However, Cian betrays the pact in disagreement with Miach's intentions, allowing Tuan to survive her suicide attempt, unlike Miach, who is declared dead. Thirteen years later, now a high-ranking inspector of Helix—an organization affiliated with WHO to monitor military conflicts—Tuan is sent back to Japan after her drug smuggling activities in the Niger warzone are discovered by senior Helix inspector Oscar Stauffenberg. On her first day back to the country she tried running away from, thousands of people simultaneously commit suicide. Tuan is now in charge of investigating this wave of mass suicide and exposing the terrorist organization behind the unprecedented attack.

After unleashing the Death Force machines all over the planet Jerra, Geist has kept himself busy by dismantling them one by one. But now he faces a formidable opponent in the form of Krauser, another M.D.S. (Most Dangerous Soldier) who has aligned himself as the only savior of mankind.