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Phineas and Ferb S03E28, Tri-Stone AreaS03E28

Phineas and Ferb · Season 3

Phineas and Ferb season 3 episode 28: Tri-Stone Area

Aired 13 January 201211 minRated TV-G

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Where to watch Phineas and Ferb Season 3 in Australia

Phineas and Ferb season 3 is streaming in Australia on Disney+ (subscription, listed for the whole show). You can also buy it on Apple TV from $14.99.

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Availability checked 16 November 2026.

What happens in “Tri-Stone Area”

It’s the Stone Age and Phineas and Ferb are cavemen who decide to invent something new, fun and useful…the wheel! Meanwhile, Dr. Doofenshmirtz attempts to make his digs more upscale by using the precursor to the Inator device... a plain old stick.

Episode summary: TMDB.

Before you watch

  • It is episode 28 of 62 of season 3, so watch episodes 1 to 27 first.
  • It runs about 11 minutes.
  • Directed by Robert Hughes, written by Antoine Guilbaud, Scott D. Peterson and Aliki Theofilopoulos.

Phineas and Ferb trailer

The official trailer for the series (no preview of this episode has been published).

Phineas and Ferb trailerPlay video: Phineas and Ferb trailer

Cast and crew of this episode

Director
Robert Hughes
Writers
Antoine GuilbaudScott D. PetersonAliki Theofilopoulos
Guest stars
John O'Hurley as Ro-juh Doofengung (voice)

Credits: TMDB.

More from Phineas and Ferb Season 3

Previous · S03E27A Phineas and Ferb Family Christmas2 December 2011Next · S03E29Doof Dynasty14 January 2012
  1. E01
  2. E02
  3. E03
  4. E04
  5. E05
  6. E06
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  8. E08
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  11. E11
  12. E12
  13. E13
  14. E14
  15. E15
  16. E16
  17. E17
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  20. E20
  21. E21
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  27. E27
  28. E28
  29. E29
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  31. E31
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  40. E40
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  48. E48
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  50. E50
  51. E51
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  54. E54
  55. E55
  56. E56
  57. E57
  58. E58
  59. E59
  60. E60
  61. E61
  62. E62

Every episode of Season 3Phineas and Ferb episode guide

Episode names, air dates, runtimes, stills and ratings: TMDB. Air dates are the first broadcast anywhere; where it streams is our daily Australian check.