After being sold to the intergalactic highest bidder, humanity has one year to vacate planet Earth. Tom, short on cash and influence, must find a way to move his family before “Forceful Evictions” begin.

Remember all those movies where the parent die trying to save his/her child.
If the choice is between their life or the safety of their child, most parents would choose safety of their child.
If the choice is between sacrificing yourself and making sure that your loved one are safe and free, I don't really think that it is a difficult decision.
The film just need to show that eternal slavery in horrible condition without any hope of escape is really a bad situation. For example, show children of another society that have been subject to the same situation. Maybe they can't even commit suicide as their master have a revival collar. As soon as die, you are revived. You can't age, you can't die and your life life does not belong to you. To me that's worse than death!!

Enslaving my family is worse the getting killed? As a parent, this is news. This parent says enslavement is the lesser of 2 evils; at least they will live to fight another day.

However, if the characters in this story think that enslavement is the greater of 2 evils -- well, that's a different matter.

For a parent, enslaving your family is worse than getting killed.
I would say that it is the highest motivator you could find.

Forced labor is an idea, but I wanted the fear of death to be the main motivator to leave.

Why kill and hunt those who can't afford relocation, why not enslave?
You can't relocate, you become the forced labour of the planet. Or maybe your first born become slave.

Great ideas. Let's get started with an outline, then first draft.