Young siblings have to use their very particular set of skills to counter bullying and alienation they’re experiencing after moving to a new country.

I might possibly add 'Two' young siblings and new school instead of country. More I think of it the more variations come to mind haha

Well, it depends on their skills. But the term "particular" + set of skills, is more cinematic I think
I'm glad you liked it though.

oh wow, that might be even better. I'll have a think about it! thanks a lot! Would you say "particular" is better than 'unique'?