Hello and welcome!

Consider the following to strengthen your logline/premise:
1. A worldbuilder may benefit your logline to orientate the reader e.g., “Set in a dystopian future, …” OR “In a dystopian future enslaved by a tyrannical megacorp, …”
2. Try to produce a single word to describe your protag’s (before arc) psychology or sociology.
3. Who is this young man? E.g., “A downtrodden clerk.”
4. Concerning the major event (his call to action) – losing one’s humanity is good, but in this world doesn’t everybody? Thus, you need an answer for “why him to save the world, what makes him so special?”
5. Concerning your goal, your protag cannot attempt or try – he must do. Having a goal of destroying a soul-sucking evil megacorp is good! In loglines we need to see intent, thus he must.
6. Evil corps are vague when it comes to opposition, think about an antagonist, a baddie CEO – we need a face to punch 😉.
7. Stating how your protag is going to complete the goal is known as the “method” which is rare to see in loglines. In your case, I am intrigued by your questionable good/evil help, but I am unable to envision what this looks like.
8. Check out the Formula link in the header to hone your logline!

This is what I can gather: When a downtrodden lemming gets his soul ripped out by the evil megacorp he toils for, a good/bad angel (classic one on each shoulder) appears to help with the singular goal of destroying it to regain his soul/humanity.

Hope you find this constructive, for me the questionable help is your hook and may answer #4.
Take care.