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{{EpisodeInfobox
| title    = Adventure Koala and the Lost Library Card
| episode  = 15
| timeline = After previous stories establishing S.A.R.T. team dynamics and Adventure Koala's invention work
| theme    = True friendship means treating what matters to your friends as seriously as what matters to you
}}

== Summary ==
Adventure Koala was working on his Page Turner 2000 invention at S.A.R.T. headquarters when Tina Turtle burst in, panicked about her missing library card. She needed it to check out 'Ancient Architecture Through the Ages,' a rare book she'd waited eight months for. Adventure Koala assembled the team to treat this as seriously as any major rescue mission.

The team split up to investigate locations Tina had visited: Adventure Koala checked Miss Molly's bakery, Felix searched the park, Penny visited Madame Plume's boutique, and Simon investigated Mr. Bristles' hardware store. During their searches, they discovered a mysterious pattern - Oliver Owl had been showing unusual interest in Tina's activities at each location, which was very out of character for the normally antisocial retired professor.

Simon found Tina's library card in the hardware store's test materials bin, where it had been accidentally swept up after Tina used it to test the sharpness of her new miniature architectural tools. When the team reunited and shared their observations about Oliver's behavior, they decided to investigate further at the library.

At the library, Tina successfully checked out her precious book using the recovered card. Inside the book, she discovered a hidden envelope containing the original architectural drawing for the Secret Chamber of Echo Falls - a document lost for over a century. They realized this was what Oliver had been after, as his grandfather was the architect who designed Echo Falls.

When confronted, Oliver admitted to tracking the book to secure his family's legacy. However, the team proposed a collaborative solution: donate the drawing to the Adventure Town Museum where Oliver would serve as a special consultant for an exhibition about his grandfather's work. Oliver agreed to this thoughtful compromise.

The story concluded with Miss Molly providing celebration treats - book-shaped cookies and architectural cupcakes with edible blueprints - as the team reflected on how a simple missing library card led to an important historical discovery. The experience reinforced that things which seem small can be tremendously important when they matter to friends, and the best discoveries are made together.

== 🎭 Themes ==
* [[friendship and support]]
* [[valuing others' passions]]
* [[community collaboration]]
* [[unexpected discoveries]]
* [[respecting both personal and historical legacy]]
* [[thorough investigation reveals deeper truth]]

[[Category:Episodes]]
[[Category:Episodes/Theme/True friendship means treating what matters to your friends as seriously as what matters to you]]
[[Category:Adventure Koala episodes]]