I need help...

So, I have this QAF series going on (Surrender). Now, I'm working on Part 4 (about freaking time, right?), but I have no idea how to even end the series. Like I know, there's going to be some sort of confrontation between Justin's dad and Brian. But, how do I bring it to an end. I think I'd like to end it in this part if I can. So I cna be done with it. Part 4 has the premiere of Justin's movie. So, anyone have any ideas? Things you'd like to see? Please help! :-)

Oh, and they've just sort of made a promise that they would both get out of the business and Justin to get an education and see the world, etc.

Thank you!