Is the landlord entitled to evict the tenants before the expiration of the lease period, for which the investor has paid in advance, and what is the ruling on recovering the paid rent after the investor's departure?

The property owner has no right to demand any rent from you, even if the investor is absent, nor does he have the right to demand that you vacate the property. Rather, he has the right to refer the matter to the judiciary.

If you wish to vacate the property and terminate the lease, this is to be done between you and the investor, not between you and the property owner, because there is no lease agreement between you and him.

Therefore, you have no right to demand a refund of what you paid from the property owner, and he has no right to evict you, because there is no contract between you.