Ep. 129: The Planet Middle School Girl Gang seeks revenge on Lum while she faces Ataru's three-day challenge
Aired on October 24, 1984

The Planet Middle School Girl Gang returns with plans to take revenge on Lum. However, Lum finds herself too distracted by a proposition from Ataru. He has challenged her to go three days without shocking him, promising that if she succeeds, he will go on a date with her. This personal conflict diverts her attention from the gang's vengeful plot. The episode centers on Lum's struggle to maintain her composure for three days while dealing with the external threat posed by the returning schoolgirl gang.
Episodes
- Ep. 125 · The group assists Pochi in rescuing his beloved blowfish from a shark kidnapper
- Ep. 126 · Ran's Supernova Fragment Causes Chaos at Tomobiki High While Beatles Song Plays
- Ep. 127 · Where is Love's Room? Kuriko and Chojuro
- Ep. 128 · Ten Acquires Salary-Man Superhero Powers Amidst Ran and Lum's Grudge
- Ep. 129 · The Planet Middle School Girl Gang seeks revenge on Lum while she faces Ataru's three-day challenge
- Ep. 130 · Lum Uses Alien Methods to Motivate Talent Show Participants
- Ep. 131 · Ryoko Uses Voodoo Doll to Harm Ataru Through Her Brother Shutaro
- Ep. 132 · Forced Marriage and Armored Asuka's True Form Revealed by Lum's Shock
- Ep. 133 · Asuka Reveals Her True Face After Years of Armor and Runs Away