Pursued by Galaxy Police Detective Mihoshi, Ryoko crash lands on Earth and interjects herself into the lives of the Masaki family, particularly the teenage son Tenchi.
Princess Ayeka, first princess of planet Jurai, regrets responding to Mihoshi's distress beacon when she meets Ryoko on Earth. The two of them go back a long way, and have been enemies for years. During her time on Earth, Ayeka finds herself falling for Tenchi, and cannot endure Ryoko's shameless flirting with him.
The Masaki home is turned upside down by the arrival of Ayeka's little sister, Sasami! Meanwhile, Ryoko uses a super cute new spaceship to make Ayeka jealous!
Ryoko drags Tenchi along for the ride when she explores a haunted cave near the Masaki Shrine! During their adventure, they accidentally awaken a "demon" who turns out to be a mad scientist!
Mishoshi's old Galazy Police partner shows up at Tenchi's house on a rescue mission, only to be shocked to find her old friend living with a space pirate, a princess, and a mad scientist!
Mihoshi and Kiyone - the dynamic Galaxy Police duo - take part time jobs to foot the bill for their new apartment! Unfortunately, Mihoshi's talent for mayhem makes holding down a job super hard!
Tenchi takes Sasami to the annual festival of the shrine, but hijinks are sure to follow when the rest of the girls bring a taste of catastrophe to the party!
Tenchi looks back on his childhood - including the death of his mother - during a heavy snowfall. When the boy falls ill, Ayeka uses a very special tree to help heal him!
Washu invents a machine capable of generating alternative realities to the specifics of the user. Curious and competing members of the extraterrestrial group overwhelm the machine and disappear into the new realities.
The dimension-shifting saga continues with Kiyone giving up her intergalactic law enforcement career to settle down near the seaside and take a job working at Ayeka and Sasami's tavern!
The final chapter in the dimension-spanning storyline finds Tenchi and Mihoshi living as husband and wife! Sasami is their lovely daughter, and Ayeka is the intrusive sister-in-law!
The temporary peace of the Masaki household is shattered when Juraian military goons arrest Ayeka, Sasami, and Ryoko! Can the rest of the gang mount a rescue mission?
After a daring escape from the Juraian military, Tenchi and the gang are branded as fugitives! Mihoshi and Kiyone visit headquarter in search of details on the turbulent times at hand!
Tenchi and his lovely ladies are still on the run, and they're quickly running out of money! To earn some extra gas money, they're forced to sling drinks at a space bar!
Engine trouble leaves Tenchi and the gang stranded in deep space, and they're almost out of food! Ryoko takes the last of the cash to buy groceries, but she ends up at a casino!
Sasami vanishes after being visited by a mysterious young girl! The rest of the gang mounts a search party, but all they find is an abandoned space ship!
The ladies dress up like sexy schoolgirls in order to slip through a space check point, but Mihoshi screws up the plan, and everyone is forced to evacuate!
