Speaking to TV Guide, David W. Zucker promised that Alicia (Julianna Margulies) will "be confronted with a whole new intensity of challenges".
He explained that Alicia will have an unsettled time at work following the introduction of new partner Derrick Bond (Michael Ealy).
"It's first perceived as a relief," Zucker said. "[But] the ink isn't dry on the contract. They've come together out of dual necessity, but they're assessing one another in terms of what the expectations are and orienting to the politics of the office."
He added: "As soon as [Alicia] feels she may have gotten herself on a secure track, suddenly everything gets shifted, which is how things started last year when she discovered the competition."
Zucker also revealed that Alicia's relationship with her husband Peter (Chris Noth) will be put to the test when he begins running for office again.
"His new campaign is going to expose [the Florrick family] to the public in regular intervals," he said. "What is the next manifestation of that relationship? He's out of jail, he's going to be setting upon what his next professional track will be.
"They are not at all the same people they were before this whole maelstrom began. Suddenly they're different people. How does the relationship accommodate that and what does it transform into?"
The second season of The Good Wife premieres on September 28 on CBS.