After the TV station gets acquired by Nanazon Prime Video, departments that don't get high ratings will be restructured (aka fired). The shooting crew takes on a large-scale plan for their survival. The Banakawa Family was an extremely wealthy family in the Edo period but their gold was hidden somewhere in a cave (that even the surviving members of the Banakawa Family can't find). So the crew's program will feature them exploring the underground world in search of this hidden treasure that so far major TV station networks with big budgets could not find.

Tsurune—It's the sound made by the bowstring when an arrow is released, and the sound that inspired Minato Narumiya to learn kyudo, a modern Japanese martial art focusing on archery. However, an incident during his last middle school tournament caused him to quit the sport. But soon, many factors conspire to make Minato take up the bow once again: the start of a new kyudo club in his high school, a chance encounter with a mysterious archer, and the support of his childhood friends, Seiya Takehaya and Ryouhei Yamanouchi. Together with his childhood friends and his new teammates, Kaito Onogi and Nanao Kisaragi, Minato rekindles his love for kyudo and works with his team toward their aim of winning the prefectural tournament.

After the administrative board at TV Nanaana cancels the network's most popular show for indecency,'' the station's film crew—team leader Nanaoka, cameraman Nanamori, and audio specialist Nanayama—boldly take on the daunting task of documenting the rare animal known as the Kiina to save the company from bankruptcy. However, they are not the only ones on the hunt; the rival film crew at Bubble TV and their deep-pocketed producer Zakibana have their sights set on obtaining the once-in-a-lifetime story as well. Braving the remote South American jungle of Ecuana, Nanaoka, Nanamori, and Nanayama must travel far and wide to film a nature documentary on the elusive animal before their competition can—because their very jobs depend on it!

Dr. Tatsunoko of Tatsunoko Research Center goes undersea accompanied by his daughter Asari to inquire into some mysterious radiation and discovers there a giant shell and it is known that the radiation comes from a globe laid inside the shell. Then Asari finds an object in the shape of compact with a message in it. It says that a space alien from the Planet of Parlum which is on the verge of extinction is lying in the globe. Suddenly a boy with a strange look appears out of the globe and goes wild. He is the very person mentioned in the message with the name of Ace. His source of energy for superhuman power is what is called space food and he can fly with the help of Silver Ring made with energy collected instantly in the aerial environment. Also he is able to use it as a weapon to fight the enemy with. Supported by his friends including Asari, Ibo the robot dog, and Hermit Crab Reporter, he gallantly goes into action to settle various difficulties caused by mystic robots and brutal space invaders.