After Lois's father, Carter, falls asleep while driving, the Griffins realize he is getting close to retirement, and visit retirement communities in Florida.
When Meg turns 18, Peter and Lois attempt to keep Quagmire from seducing their daughter.
Brian starts dating a blind girl and things get a little crazy when she says that she hates dogs. Meanwhile, the Griffin family installs a new staircase in their home when Peter keeps falling on the old one and decides to live upstairs full-time.
When Peter and the guys try to salvage a sunken Mercedes-Benz, Peter half-heartedly promises a favor to a helpful dolphin (guest voice Ricky Gervais). Soon the dolphin moves to Quahog, outstays his welcome at Peter's and moves into Cleveland's house across the street. Peter tries to reunite the dolphin with his ex-wife in hopes that he'll return to the ocean, but his plan backfires and the whole dolphin family moves into Cleveland's.
Peter and Meg bond during a college visit to Vermont. The two party all night resulting in Meg missing out on an important interview. Lois begins to worry that Peter is becoming too much of a distraction and warns Meg not to get too attached, but Meg is just happy to be getting positive attention from her father for the first time.
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