The “Seven Deadly Sins”—a group of evil knights who conspired to overthrow the kingdom of Britannia—were said to have been eradicated by the Holy Knights, although some claim that they still live. Ten years later, the Holy Knights have staged a Coup d’état and assassinated the king, becoming the new, tyrannical rulers of the kingdom. Elizabeth, the king’s only daughter, sets out on a journey to find the “Seven Deadly Sins,” and to enlist their help in taking back the kingdom.

A desolate land stretches out from the city of poverty. A motorcycle speeds recklessly, blowing clouds of sand and dust. The rider is the protagonist of this story – he has neither a name nor a past. All he has is his ring name, “Junk Dog” and a technique for rigging MEGALOBOX matches with his pal Gansaku Nanbu, which they use to support their hand-to-mouth lives. JD is bored, resigned, and unfulfilled. Yuri has been the reigning champion of MEGALOBOX for the past few years. He has the skills and presence of a true champion. This is a story of JD and his rival, Yuri.

Traveling in search of the rare ingredient, “sky fish” Meliodas and Hawk arrive at a palace that floats above the clouds. The people there are busy preparing a ceremony, meant to protect their home from a ferocious beast that awakens once every 3,000 years. But before the ritual is complete, the Six Knights of Black—a Demon Clan army—removes the seal on the beast, threatening the lives of everyone in the Sky Palace.

Earth has regained peace, but a new enemy with space-time powers has arrived! Musashi, Cosmos’ host, tells the UPG that the Ultra Warriors have been sealed inside an evil space-time castle by a warrior woman named Arina. The fate of the entire world will be at stake. Hikaru and Shou are not strong enough to face this enemy, but if they can learn to fuse their hearts, they stand a chance. But to do that, they first must survive the training of Ultraman Zero!

Posing as lovers on vacation, Motoko and Batou work to try to stop a terrorist organization whose symbol is the Scrasath. Meanwhile, Togusa investigates a murder of a man who possessed a prosthetic leg manufactured by the Mermaid’s Leg corporation.