When Ella heads out to collect space materials for the Clubhouse, she borrows Slippy's luckiest good luck charm, Mooncake; when Ella arrives at a black hole, Mooncake is bumped into its strong gravity.

It's Ella's mom's birthday! Dad has bought the gift and Tilly has made the card, but Ella wants to get her mom a present just from her! Ella heads out to find something spectacular and runs into her friends Slippy and Madhu.

The gang is playing at the clubhouse when a silicon rocket goes missing; they decide to look in the atmosphere of Jupiter, where Ella can explore its Great Red Spot while Slippy looks for the elusive jellyfish.

Ella finds the missing wheel of the Lunokhod 1, a Robotic Moon Rover featured in Dad's new Lunar Exploration Museum; when they power it up, the Rover races across the moon's surface with Ella, Slippy and Madhu in hot pursuit.

After an exciting race, Ella's Dad gives her a mysterious Treasure Map of their solar system. It was Slippy's dad who had given it to him when they were boys.

Ella's family is packing for their annual Flare Star Day when Madhu asks Ella for help; Slippy is next to ask for her help racing the Gemini twins; not wanting to dissapoint Slippy, Ella continues to race but time is running out to make flare day.