Epic 19: Gosei Knight Will Not Allow It

Gosei Knight Will Not Allow It is the ninteenth episode of Tensou Sentai Goseiger.

Plot
As the Gosei Angels talk about the turn of events with Gosei Knight with the intent to grant his trust much to Agri's dismay, Buredoran finds Giemurou of the Kappa to use in his own plan for Gosei Knight. After using his ticks to capture several people, Giemurou battles the Goseigers before Gosei Knight arrive. Overpowering the Yuumajuu at first, nearly getting some people caught in the crossfire as Gosei Black is unable to save a little girl named Kanako from a tick, Gosei Knight is captured with Buredoran's aid. Later, as they try to make amends with Kanako's father, the Gosei Angels reveal their identities while promising to save the girl before others leave to find her as Moune consoles her brother. After hearing the man telling his wife to believe in them, Agri gains the strength to join his team. While this occurred, finding himself trapped and his Leon Cellular taken, Gosei Knight's power is siphoned by the tick and transferred to the hostages, turning them into Kappas and have them covert other humans while they suck up Earth's waters. As Gosei Blue and Pink fight Giemurou with the Landick siblings arriving for support, Gosei Knight is horrified to learn of Buredoran's scheme as Gosei Red battles him. As the two fights collide, Gosei Knight grieves about being used to kill the planet until the Landick siblings snap him of it before they attempt to free him to his shock. Seeing the Goseigers' determination to save the world, Gosei Knight breaks free from his cage and battles Buredoran and Giemurou, defeating the latter as Buredoran summons the Bibi Bugs to enlarge Giemurou. Stopping the Goseigers from summoning their Headders, Gosei Knight summons the Knight Brothers into battle as he becomes Groundion, combining with them to become Gosei Ground and destroy Giemurou. Later, as Kanako is reunited with her parents as Agri erases their memories of the incident, Gosei Knight turns down their offer of joining them before he takes his leave as Alata tells him their missions are the same.