Book Four is set three years after the previous season. It deals with Avatar Korra's journey of self-discovery following the physical and psychological injuries she incurred in the fight with Zaheer, and with unrest in the Earth Kingdom where Kuvira, formerly an officer in Suyin Beifong's service, seeks to seize power by military force.
Tenchi Masaki may be a 17-year-old young man in rural Japan, but little does he know how bad his day will be getting. When a space pirate chased by a pair of Galaxy Police officers crash-lands at his grandfather's temple, Tenchi is sucked into a new adventure that will literally blast him off into outer space and beyond.
A dream of falling from the sky...and then birth. Rakka is born from a large cocoon into the Old Home, greeted by a group of females with small wings on their backs and shining halos above their heads. Soon Rakkas own wings grow, a halo is placed on her head and she is told that she must work in the nearby town of Grie. She soon realizes that the town and the entire world they live in are confined behind the Wall, a tall, impenetrable wall that none except the mysterious Toga are allowed to...
Tenchi decides to move to Tokyo in order to lead a normal life in the big city. While in Tokyo Tenchi meets a girl named Sakuya. They soon fall in love but as it turns out a dark sinister force has created Sakuya to get at Tenchi and rule the earth. Now Tenchi must balance love, friends, and life while defending the earth one last time.