Stressed out by his family and his obligations, Stan decides to buy a hot tub to relieve his stress, but gets into hot water when he finds out the hot tub is evil.

Roger becomes Steve's legal guardian, but gets a little overzealous in the parenting department when he gets the principal fired. After getting beat up by the other teachers at the school, Steve decides to run away. Meanwhile, Stan and Francine attempt to make waves after discovering that their vacation at the biggest water park in the world fails to get their hearts pumping.

When Stan realizes that he might never fulfill his dream of becoming a Best Man, he convinces his last single friend, Principal Lewis to marry the school’s Superintendent and to choose him as his Best Man. Stan invites Lewis’ old friend from prison to the wedding, only to discover a secret that could prevent the wedding from happening at all. Meanwhile, Roger finds the perfect pair of shorts, and an encounter with Ricky Martin makes him question his self-confidence.

Stan makes a desperate attempt to bond with his son by creating a busty blonde bombshell.

When Stan runs into his former crush from CIA boot camp, his affection for her resurfaces, which drives Francine into a jealous frenzy. By including Roger in her plan for revenge, Francine accidentally leads him straight into the arms of a dangerous alien hunter. Meanwhile, Steve is struck with good luck, when he accidentally wears Hayley’s panties to school.

Father Donovan holds a Christmas play at the mall and casts Stan as Santa Claus and Roger as Jesus. But after the two get in a fight and cause a scene, Stan is kicked out of the church. Meanwhile, Hayley and Jeff adopt a child who turns out to be possessed.

When Steve tries to prove himself as a macho man to Stan, he follows in Roger's footsteps and tries to change himself from the outside in with a superhero persona. Meanwhile, Francine is going through an identity crisis of her own when she receives surprising news that could change the family forever.

When Stan finally has enough money to afford a membership at the golf club he has worked at for the past thirty summers, his hard work and perseverance prove to be futile when the club gives a membership to Steve first. However, things are not all what they seem when Stan realizes who the club owner really is.

Stan joins Roger and Steve's fictional detective agency, but he ruins the fun by being extremely incompetent at his "job." Roger demands that Steve fire Stan, but Steve cannot bring himself to do it and ends up lying to Roger. Things take a turn for the worse when Stan is kidnapped, and Steve must tell Roger the truth.

When Stan is overly enthusiastic about his hatred for old people, a hex is placed on him that turns him into a frail, old man. Meanwhile, Roger takes Francine on a road trip to a dance competition, but she soon finds out it's not what she bargained for.

When Barry (guest voice Eddie Kay Thomas) threatens Stan's old high school wrestling record, Stan enlists Roger to beat Barry and defend his small claim to fame. However, Stan is caught off-guard when Roger, not Barry, is actually the threat to Stan's record.

Roger acts as the family therapist as his alter-ego "Dr. Penguin" until he is sent out to fight the war in Iraq. Klaus decides to take Roger's role while he is away, but not without major ruckus being caused.

Despite Stan's objections, Francine buys Steve the dog he has always wanted. However, when the dog suffers a horrific accident, Stan refuses to take the pup off life support because of a traumatic childhood incident.

After losing patience with Hayley and Jeff for their freeloading ways, Stan bets the young couple that he and Francine can live on minimum wage for a month. Meanwhile, Steve and Roger embark on a mission to test drive the car of their dreams.

Stan fears he may not be Hayley's real father, so he goes back in time to find the truth. In doing so, he disrupts the past and must save the future.

Roger rediscovers one of personas, Ricky Spanish, and remembers why he's the most hated person in Langley Falls. Meanwhile, the child Stan and Francine sponsored in Africa suddenly shows up on their doorstep.

When Stan catches Steve playing imaginary games with his toys, he decides to take his son down to Mexico to help him become a man. But the trip takes a turn for the worse when Stan and Steve are kidnapped by a drug cartel, and it’s up to Steve to break himself and Stan out of captivity.