Greg and Kate have moved to Manhattan. Greg's career as a financial trader is winding down, while Kate's career, as a public school English teacher, is beginning to offer her more opportunities. Greg brings home a dog he found in the park, or that has found him, bearing only the name "Sylvia" on her name tag. A streetsmart mixture of Lab and Poodle, Sylvia becomes a major bone of contention between husband and wife. The marriage is put in serious jeopardy after a series of hilarious and touching complications.