to get free from trouble or trap?

[mega21]

The context is as follows:
The lion is in trouble. The mouse comes to help. The lion gets free.
My question is: Should not the last sentence be " the lion is set free". Are they both correct in this context?
My guess: I guess both are correct but I'm not sure that's why I'm asking!

 

[Copyright]

What is the source, please?

 

[mega21]

I saw it somewhere in the internet and I think he/she is not native speaker.
I also can add to my earlier post that "The lion is rescued" is better than both.
Can Anyone confirm, please?

 

[ewie]

This sounds like a version of Æsop's fable The Lion and the Mouse.

Of the three alternatives given, I prefer The lion is set free. (Or The mouse sets the lion free.)