Trakeena escapes the planet Onyx, where she is trained by Villamax. Meanwhile, Deviot sets Scorpius up to be killed by the Rangers. When Trakeena hears of this, she races back to the Scorpion Stinger to assume command, just in time to prevent Deviot from using her coccoon.

Trakeena captures Leo to make him pay for killing her father. The two fight one on one, until Deviot's hitmen try to kill Trakeena. She turns the tables on the assassins, and Leo escapes while the villains are distracted.

Holding High Commander Renier hostage, Trakeena demands that Terra Venture send her a mechanic to fix the Scorpion Stinger. Damon volunteers, and while he works on the engine, Leo sneaks in and frees the Commander.

One of Trakeena's monster takes control of Commander Stanton's mind, and has him set Terra Venture on a course towards a star. Only by disregarding the rules and following his instincts is Kai able to discover this plot, free Stanton, and save Terra Venture.

Deviot sends the honorable warrior Loyax to destroy the Rangers, but when he meets Maya he questions the honor in his ways.

The Rangers fight the Chameliac Warrior to save their Galactabeasts.

Deviot enlists the Psycho Rangers to capture the Galaxy Rangers, prompting Andros and the Space Rangers to travel to Terra Venture to help.

The Space Rangers and Galaxy Rangers unite to help Kendrix against the Pink Psycho Ranger.

Karone once again assumes the role of Astronema as she risks her life to save the Pink Quasar Saber from falling into the hands of evil.

Karone struggles to overcome her evil past as Astronema while adjusting to being the new Pink Galaxy Ranger.

Terra Venture is greeted in the Lost Galaxy by Captain Mutiny, who the Rangers discover runs a slave camp, and is looking to add the colony's citizens to his work force. Mutiny unleashes the Grunchor monster on Terra Venture, which burrows underground.

Leo and Damon are captured by Captain Mutiny and hung out to bake in the sun. As they roast, they remember their past adventure as Rangers. The others find them and set them free.

Terra Venture discovers a lush green planet to colonize as Trakeena merges with Deviot to become stronger than ever.

The Rangers work to evacuate the crew of Terra Venture as Trakeena launches her final assault.