Before license level 3:
Goto raraki restaurant in Quintown and watch the news
Meet hurt pilot in Pacifica Terminal
After license level 3:
Goto the pub in Regas and listen to the strangers conversation.
Goto Argus tech in Newerth (Dr. Targas).
Goto Spanzo Bar in New New York and talk to Mouth.
Goto Quintown and talk to Fasit.
Attack Dragon Teeth at location according to Fasit.
Meet Stan at Tuyak.
Go back to Regas with Stan.
Talk to Yanin the dock of New New York.
Meet Mouth in Himbleton.
After having license level 1 and having done everything above
Talk to Harvey Grant He will tell you to destroy all the pirate
Then protect Hom from the attack of the Pogodyne Security Fleet.
Attack Pogodyne Security Fleet.
Goto Argus Tech and ask for the Anti-Matter gun.
Goto Nova Research Lab.
Final Mission at Gadon System E1.