Toni, on the instructions of Salvatore Leone, goes to meet an associate of his. The associate is corrupt LCPD police officer Leon McAffrey. After a heated discussion, the two decide to work together and drive off to Torrington to meet some Sindacco Family gang members. Leon supplies Toni with an M4 rifle and, with Toni out of his car, drives off, telling Toni to 'adapt and survive'. Toni kills a number of Sindacco Family gang members, after which McAffrey returns and the two drive off, with the Sindaccos in motorcycles, pickup trucks and a helicopter, in hot pursuit. Toni then uses the rifle to fend them off, before McAffrey decides it's becoming too high profile. He drives off, leaving Toni in Belleville Park.
McAffrey drives off, while Toni shoots all of the Sindaccos near the building, then heads back to McAffrey's car and shoots at the Sindaccos from the passenger seat, shooting at pickup trucks, motorcycles and a helicopter, while Leon drives through Bedford Point all the way to the Belleville Park entrance of the Shoreside Lift Bridge.
The reward for completing the mission is $1,500 and the unlocking of The Whole 9 Yardies mission for Leon McAffrey.
This mission bears some similarity to the GTA San Andreas mission Reuniting the Families, as both involve a shootout, then escaping the enemies. However, the enemies are different; SAPD in Reuniting the Families and the Sindacco family in this mission.
The title is an obvious nod to the GTA III mission Sayonara Salvatore, as both contain the word "sayonara (さよなら)", which means "goodbye" in Japanese, and both of the missions involve killing people.
The player can replace the given M4 with an AK-47; it will also be used during the drive-by sequence.