his/her/their plan
His plan is dangerous.
A continuación, seguir con su plan porque no prueba nada.
Then, continue with your plan because it proves nothing.
— Mother Night (1996)
Su plan no funcionará, al igual que su automóvil.
His plan won't work, just like his car.
— Paddington 2 (2017)
No creo que su plan vaya a funcionar.
I don’t think their plan is going to work.
We support your plan.
Tom abandonó su plan de construir una fábrica.
Tom abandoned his plan to build a factory.