Yes, Dear is a sitcom about two young couples and their contrasting views on parenting. Greg and Kim struggle to be perfect at the job every single day. Kim is a stay-at-home mother, while Greg works at a studio and is very successful at what he does.
Christine is her sister, and a mother of two. Christine's husband is Jimmy and he is a security guard at the studio Greg works at. The two families are equally separated by differences but continue to live with each other, and live their lives together.
Then, Jimmy moved next door and things changed a little bit, but not much as they continued to spend their days (mostly) at Greg and Kim's house. Jimmy can't afford a life that Greg has, but he and Christine manage to support 2 children.
Greg and Christine form an unofficial pact when they realize that Kim listens to everything Christine says and Jimmy follows Greg's advice over Christine's. But when Christine becomes uncomfortable and refuses to continue the scheme, Greg continues to manipulate Jimmy in an effort to make Christine's life miserable.