Your some guy working a dead end job in some high tall rise building when you get a phone call, your sisters been taken into hospital and they are flying in the leading white mage to curara her. Just as you leave someone falls past your window and splats on the ground.
two days after your sister has gone missing and no one else remembers the guy falling.
You leave in search of the truth and your sister, across many lands and seas through the under world and end up back where you started.
You fight your way to the now heavily guarded tower which you used to work, where you talk with the CEO who claims he is innocent, but you know better all the evidence points to him. Just as your about to fight him, the mutated figure of your sister bursts through the window and attacks you with black magic etc.
After you have defeated her and laid her to rest you assassinate the CEO. a man walks in through the doors and congratulates you on succeeding with his plan, it's the CEOs son and it was him pulling the strings of your whole journey (with flash backs of him in various towns you visited) all to gain control of the company.
Not sure how to end it, i'll leave it up to you
