Zim dreams of greatness. Unfortunately, though, he's hopelessly inept as a space invader. Desperate to be rid of the annoying Zim, his planet's leaders send him on a mission to infiltrate Earth, providing him with leftover, cobbled-together equipment. To their consternation, Zim succeeds in setting up a base on Earth and infiltrating human culture, posing as a human child as he plots the planet's downfall. Only Zim's archnemesis, Dib, recognizes that Zim is an alien, and of course, nobody believes Dib's claims.
| Title | Time | |
|---|---|---|
| 1 | The Nightmare Begins | 2001-03-30 |
| 2 | Parent-Teacher Night | 2001-04-06 |
| 3 | Walk of Doom | 2001-04-06 |
| 4 | Bestest Friend | 2001-04-13 |
| 5 | NanoZim | 2001-04-13 |
| 6 | Germs | 2001-04-20 |
| 7 | Dark Harvest | 2001-04-20 |
| 8 | Attack of the Saucer Morons | 2001-04-27 |
| 9 | The Wettening | 2001-04-27 |
| 10 | Career Day | 2001-05-04 |
| 11 | Battle-Dib | 2001-05-04 |
| 12 | A Room with a Moose | 2001-08-17 |
| 13 | Hamstergeddon | 2001-08-17 |
| 14 | Invasion of the Idiot Dog Brain | 2001-08-24 |
| 15 | Bad, Bad Rubber Piggy | 2001-08-24 |
| 16 | Planet Jackers | 2001-08-31 |
| 17 | Rise of the Zitboy | 2001-08-31 |
| 18 | Plague of Babies | 2001-09-07 |
| 19 | Bloaty's Pizza Hog | 2001-09-07 |
| 20 | Bolognius Maximus | 2001-09-21 |
| 21 | Game Slave 2 | 2001-09-21 |
| 22 | Halloween Spectacular of Spooky Doom | 2001-10-26 |
| 23 | Mysterious Mysteries | 2002-03-22 |
| 24 | Future Dib | 2002-03-22 |
| 25 | Door to Door | 2002-03-29 |
| 26 | FBI Warning of Doom | 2002-03-29 |
| 27 | Battle of the Planets | 2002-04-05 |
| 28 | Abducted | 2002-04-12 |
| 29 | The Sad, Sad Tale of Chickenfoot | 2002-04-12 |
| 30 | Megadoomer | 2002-04-26 |
| 31 | Lice | 2002-04-26 |
| 32 | TAK: The Hideous New Girl | 2002-05-10 |
| 33 | GIR Goes Crazy and Stuff | 2002-05-24 |
| 34 | Dib's Wonderful Life of Doom | 2002-05-24 |
| 35 | Hobo 13 | 2002-07-12 |
| 36 | Walk for Your Lives | 2002-09-28 |
