He's going to put an end to your entertainment (3,9,5)

'an end to your entertainment' is the definition.
I can't judge whether this defines the answer.

'he's going to put' is the wordplay.
I cannot quite see how this works, but
'going' could be 'departing' ('depart' can be a synonym of 'go') and 'departing' is found within the answer.
'put' could be 'the' (I've seen this in other clues) and 'the' is found within the answer.
The remaining letters 'guest' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).

Can you help me to learn more?