The Challenge (1998)

S13E18 Henry's Good Deeds

Following Thomas's kind act for Farmer McColl, Henry, on his way to deliver a nesting pole for the endangered Sodor Warbler, feels inspired to also perform a good deed. Unfortunately, his efforts repeatedly backfire, leading to a series of comical mishaps. However, in an unexpected twist, Henry ultimately ends up accomplishing a good deed without even realizing it.