Tali's Loyalty Mission (Treason) takes us to the Quarian Migrant Fleet to defend Tali against some treason charges. I'll walk you through the hearing and tell you how to clear the Alarei of the occupying Geth forces. If you need any help with this loyalty mission, look here.
Introduction
This should probably be one of the last loyalty missions that you get. We need to take a trip over to The Migrant Fleet and defend Tali against some accusations of treason against the fleet. Head onto the ship and bring someone good with you. You already have a good engineer around thanks to Tali and she'll thankfully be pretty useful against the geth. You might want to drag along Miranda for some biotic support. Or you could drag Grunt along for basic soldier skills. It's your call, and most of the fight will just involve you shooting hunters before they rush you.