When a teenager and his best friend get drawn into a video game, his friend is taken by the game’s antagonist, and now he needs to – not only save his friend – but find a way to get them both back to reality./Kalle

I think you can short it down by saying "(...)his friend is taken hostage and now he need to find his friend - and a way to get them both back to reality"
Something like that.
/ Amanda E

I think you can shorten it down by saying for example "(..)his friend is taken hostage and now he needs to save his friend and find a way to get them both back to reality."

Not at all what I was thinking actually, but now when you've said it, I see that the logline suggests a similar movie. /Kalle