English Translation
Where in the world is Tom going?
“ευχή” is a feminine noun in the accusative case meaning “wish” or, in this context, used as an idiomatically intensified place, akin to “earth” when someone says “Where on earth…?”.
Please note that the phrase “στην ευχή” is colloquial and doesn’t literally mean any specific location. It is a way of expressing that the speaker is perplexed or frustrated and seeks an emphatic response.