| Well, thank you for inviting me!
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The nineteenth episode of Season 39. Phineas, Ferb, and friends climb Mount Everest, but they nearly cost their lives. Doofenshmirtz finds buried treasure in the Pacific Ocean.
Phineas and Ferb are busy packing for a trip to Mount Everest! Alongside them they bring Isabella, Buford, Baljeet, Irving, Heidi, Mallory, Caleb, Dylan, and Austin. Irving asks if Perry is coming. Then, Dylan wonders where Perry is. Perry enters his lair from the tree and receives his mission. Monogram tells Perry that Doofenshmirtz has been spotted in the Pacific Ocean looking for something. He needs Perry to go over there, and Herman the Hedgehog will help him get there. Carl says Herman is faster than you'd think. Turns out he runs faster than the speed of sound. Elsewhere, the boys hop into a plane and head to Mount Everest and start their climb. Little do they know about the dangers ahead. Meanwhile, Perry reaches the shore and hops into the ocean. He finds Doof and he is trapped in a cage. Doof presents the Buried-Treasure-Inator. With it, he wants to find a treasure that's well kept in the ocean. With the boys, Baljeet is glad for the parkas made to adjust warmth. Suddenly, Caleb hears rumbling and notices it's getting windier. There's a storm and avalanche. Suddenly, Doof finds the treasure which is just a recipe that a crab takes back and the boys find themselves in the snow. Phineas asks for forgiveness but Caleb has to go to the hospital. Buford says it's Phineas' fault again.
- What a Climb!
The "Too Young" Line
Perry's entrance to lair
- Herman the Hedgehog appears ("Bowl-R-Ama Drama")
- Buford says that it's Phineas' fault again ("It's Fruitcake Weather")
- Sonic the Hedgehog: Herman now has abilities similar to Sonic
- SpongeBob Squarepants: The treasure is based of the Krabby Patty secret formula