After conquering Marvel’s superheroes and Star Wars, Disney’s hit cartoon Phineas and Ferb is about to get Lost. In an upcoming installment “Lost in Danville” set to air Monday, September 29 at 7:30pm (ET) on Disney XD, the tinkering boys will find themselves in a mysterious episode written by Lost showrunner Damon Lindelof.

A mysterious locked capsule falls into Phineas and Ferb’s back yard and they struggle to open it, only to discover they have unleashed something they cannot control. Meanwhile, Perry learns that Dr. Doofenshmirtz has been abducted and tracks him to Seattle where another evil scientist, Professor Mystery, has his own sinister plan.

A locked capsule? A polar bear pictured in the still above? Perhaps the elusive Dharma Initiative and the sinister Smoke Monster will play pivotal roles here. Guest voices includes Lost‘s very own Terry O’Quinn (John Locke) as Professor Mystery and Jane Kaczmarek (Malcolm in the Middle) and Rob Morrow (Numbers) play capsule inhabitants Denise and Bernie (perhaps Danville’s very own Bernard and Rose?–just a theory!).

The ABC drama premiered on 9/22 back in 2004; celebrate 10 years of Lost by watching this specially themed P&F episode that is bound to be filled with easter eggs galore.