Successful restaurateur and man-about-town Jimmy Martino is used to being the most suave, most handsome and most single person in the room. But everything changes with the surprise appearance of Jimmy's adult son, Gerald, and his baby daughter, Edie. Now Jimmy has to unlearn a lifetime of blissful selfishness and grapple with the fact that he went straight from single to grandfather in six seconds flat.

While Jimmy struggles to adjust to his newfound family, Gerald surprises him with plans for the family's first trip to the beach, which excites everyone - except Jimmy. When he decides to bail on the outing in favor of a glamorous pool party nearby, he drags Gerald along, leaving Vanessa and Sara with a chance to get to know one another, for better or for worse.

When Jimmy realizes that he doesn't know much about Gerald, he decides to take him out for a night on the town. Meanwhile, Annelise hires a new mixologist to spice things up at the restaurant.

After Jimmy misses Edie's second birthday party, he decides to throw her a big bash at his restaurant to make it up to the family. When Sara's brother (Patrick Fischler) shows up, he brings the party to a screeching halt by confronting Jimmy about leaving Sara to raise Gerald on her own.

When Gerald can't make it in time for Edie's interview at the most elite pre-school in the area, Jimmy steps in to help out. But once he meets the admissions counselor, he accidentally starts a lie that takes on a life of its own.

In a quest to find his own Amal Clooney, Jimmy goes out with Sara's co-worker, but when she is not impressed with his smooth moves, Jimmy turns to Sara for pointers. Meanwhile, Gerald and Vanessa decide to become friends with benefits.

In hopes of helping Gerald score with the ladies, Jimmy takes him out for a swanky night on the town. But when Gerald falls for a party girl, Jimmy fears she may be into Gerald for the wrong reasons. Meanwhile, Vanessa starts a mentorship with Annelise.

Jimmy plans his annual Malibu Thanksgiving day with one of the hottest stomach models on Instagram, but his plans get derailed when he swings by Sara's house for an obligatory holiday visit and feels threatened by the return of her ex-boyfriend, Bruce.

Jimmy hires Gerald as the new host at his restaurant and gives him a crash course in hospitality. Meanwhile, Vanessa teaches Sara how to take sexy photos for Bruce, and Annelise encourages Ravi to crack down on the comedy in the kitchen.

After hearing that Jimmy hasn't been to the doctor in more than 10 years, Sara and Gerald trick him into seeing their family doctor for a routine physical, which results in an unsettling discovery. Meanwhile, Gerald and Vanessa stress over Edie's upcoming surgery, and Annelise and Ravi stumble upon Jimmy's secret safe.

When Jimmy reunites with his old buddies in the "Sat Pack", Ronnie gives him a hard time about his new life as a family man. Meanwhile, Bruce springs big news on Sara, and Gerald is blindsided by Frankie's confession.

Vanessa and Jimmy get Edie involved in baby modeling - without Gerald or Sara finding out. Meanwhile, at the restaurant, Annelise loses her composure when she falls for a restaurant staff member.

In an effort to beef up the cool factor of his restaurant, Jimmy throws a party for Chason Fairwick - one of the biggest pop stars around - which includes decking out his restaurant in full '80's garb. Meanwhile, Ravi believes the secret to boosting reservations lays in tableside guacamole.

In an effort to prove that he doesn't always need validation from women, Jimmy spends an evening at a Korean spa with Ravi, Gerald and a few guys from the restaurant. Meanwhile, Sara, Vanessa and Annelise go out for a girls' night at the hottest new bar in Los Angeles.

When Edie is bitten at school, Jimmy and Sara go to great lengths to find out who did it. Meanwhile, Ravi sets up a meeting for Gerald and Vanessa to meet a flashy tech investor named Kirk, but once they meet him, they are not so sure they'd like to do business with him.

When Gerald starts getting online threats from a bully, Jimmy tries to protect him. Meanwhile, Sara and Vanessa take matters into their own hands and pay a visit to the bully's mother - which only makes things worse.

When Sara invites Jimmy to accompany her to an ex's party and play the role of her "boyfriend", Jimmy realizes his feelings for Sara may be deeper than he thought. At home, Gerald and Vanessa panic about their parenting abilities when Edie starts acting out.

Jimmy meets the beautiful, glass-ceiling-breaking CEO Catherine Sanders at a book signing and the two start dating, but Jimmy soon realizes he is the less dominant half of the relationship and doesn't know how to handle it. At the same time, Sara has started seeing Craig regularly, but soon finds Craig may want more from the relationship than she does. Elsewhere, Gerald and Vanessa search for office space, which brings them closer together.

Jimmy and Catherine are getting along so well that Jimmy actually wants be exclusive with her and begins calling her his girlfriend. He gets upset, however, when he overhears Catherine's end of a phone conversation in which she refers to him as "some guy I'm seeing." Meanwhile, Gerald and Vanessa try to begin life as a couple, but then have a bad experience when Gerald invites Vanessa to the traditional Friday Movie Night he has with Sara, making him think they have no common interests.

When Jimmy has trouble admitting that he's 51, he throws himself a second 50th birthday party. The party triggers flashbacks of where he was a year ago, showing Jimmy what a difference his family has made in his life.

Jimmy plans an emotional memorial service while processing a painful loss. Meanwhile, Sara is faced with a difficult decision after Craig asks her to take the next step in their relationship.

Jimmy and Sara wonder if they should give their relationship another shot, but Sara is hesitant to put herself in a position to get hurt again. Meanwhile, Gerald plans an elaborate proposal for Vanessa.