Dora the Explorer (2000)

S4E26 Super Spies 2: The Swiping Machine

Dora receives a special gift from her Abuela—a necklace that perfectly matches her bracelet. But when Swiper snatches it and tosses it all the way up to Star Mountain, Dora explains that this is where all the Explorer Stars live. She calls out to the stars for help. Determined to get her necklace back, Dora and Boots set off on a journey: climbing the 15 steps, scaling the Diamond, and finally ascending the Giant Star.