The three brothers discover that the human experiment banned after destroying the Orochi, is still going on to secretly revive the evil snake. They also find out that some ex-members of the Yamainu (the Japanese military unit formed to kill the snake) are behind this conspiracy. The brothers fight together again in a battle against the military. (Source: Amazon Prime Video)

Fuuma ninja clan is a secret ninja tribe that is waiting for the Orochi (gigantic snake) to resurrect for generations. Shirasu and his twin brother Ichiu grew up in this viscous environment and this tells how they become the leaders of the clan. (Source: Amazon Prime Video)

Nobita Nobi is a normal fourth grade student. This all changes, however, when a blue robotic cat appears from his desk drawer. Calling himself Doraemon, this robot tells Nobita that his future descendants from the 22nd century live in poverty because of all the mistakes he made. Therefore, they have sent Doraemon to serve as a guide and mentor to Nobita, so that their future may change for the better. What Doraemon comes to learn, though, is that Nobita is the weakest and laziest student in the whole school. To assist in his quest, Doraemon has a four-dimensional pocket with him, in which he keeps various machines and gadgets from the future. Unfortunately, these often result in even more trouble for Nobita. Will Doraemon really be able to achieve his mission of changing Nobita, or will he remain as he is?

Nobita and his friends gathered at Shizuka's house when they heard about the news about missing flocks of bird species. Nobita believed they were taken away by winged creatures and became obsessed on flying on his own. He created mechanical wings and upon the experiment he encountered an actual winged creature flying out of a time-space distortion. Upon helping him whose name is Gusuke, Nobita and his friends were sucked into the distortion and reached Gusuke's home, Birdpia or the world where the winged creatures live. (Source: ANN)