Gabe manages to save and cure Lian but is unable to save his fellow agent Teresa Lipan. During this ordeal, Lian is infected with the Syphon Filter virus and is up to Gabe to save her with the vaccine. The Agency ends up kidnapping Lian and demands Gabe the data in exchange for his partner. Taking place right after the original, Gabe leaves Kazakhstan with his CBDC partners after obtaining back-up files pertaining the virus and the Agency's conspiracy.

Logan is able to kill Rhoemer and avert World War III. It is later revealed that his employer Markinson is secretly working with Rhoemer to obtain Syphon Filter for the Agency. The plot involves the chase of international terrorist leader Erich Rhoemer and uncovering his bioterrorism plans behind the Syphon Filter virus, with Gabe Logan experiencing subsequent betrayals and conspiracies.

Plot Summary (Spoilers) Syphon Filter ( PS, PSN, Android) In Omega Strain, Gabe was appointed Commander-In-Chief and renamed the Agency to the International Presidential Consulting Agency (IPCA).

Although they succeeded, Gabe and Lian soon learned that their bosses in the Agency were involved with the terrorist plot and soon became fugitives from their own employers. With his partner Lian Xing, Gabe traveled around the world in an effort to stop a deadly virus known as the Syphon Filter virus from spreading. Created by John Garvin and Richard Ham, Syphon Filter follows protagonist Gabriel 'Gabe' Logan who was a secret agent for a black-ops organization known as the Agency.

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