Original air date: 2/24/2003 (produced in 2002)
Dora has lost her teddy bear! Tico has lost his keys! Even Swiper has lost something! So Dora and Boots set out to find all the lost treasures at the Lost City. They'll need the viewer's help with the first Explorer Stars to race through the Number Pyramid and fix the Mixed-Up Jungle to get to the Lost City to find Dora's teddy bear… and all the other lost treasures too!
Tropes:
- Later-Installment Weirdness: This is the first episode where Backpack is never asked.
- Lost Toy Grievance: Everyone in this episode has lost something.
- Lost World: The titular Lost City.
- Not Me This Time: Swiper confesses to Dora that he did not swipe her beloved teddy bear, and for once, he means it.
- Pet the Dog: When Dora is moping over her missing teddy bear, Swiper honestly tells her he didn't swipe it.
- Title Sequence Replacement: When this episode first aired, it opened with the Season 1-2 intro (those versions were also seen on the DVD releases), before quickly changing to the Season 3-4 intro not long after.
- Treasure Hunt Episode: This episode revolves around Dora and Boots having to find all the lost treasures at the Lost City.
