Ep 1. Oh My Santa

In the opening episode of season 4 of Fuller House, titled "Oh My Santa," the Tanner family is preparing for the holiday season and all of the chaos that usually comes with it. The episode kicks off with DJ (Candace Cameron Bure), Stephanie (Jodie Sweetin), and Kimmy (Andrea Barber) decorating the house for Christmas and getting into the spirit of the season.

As the family is getting ready for their annual holiday party, they receive a surprising visit from someone they never expected to see again - Kimmy's brother Jimmy (Adam Hagenbuch), who has been off traveling the world for the past few years. Jimmy's unexpected arrival brings some tension to the family, as they try to adjust to having him back in their lives after his long absence.

As the party gets underway, the Tanners are forced to deal with their own holiday dilemmas. DJ is grappling with the fact that her ex-boyfriend Steve (Scott Weinger) is now dating her best friend CJ (Virginia Williams), and she's not sure how to navigate those complicated emotions. Meanwhile, Stephanie is struggling to come up with the perfect gift for her girlfriend and partner, DJ's co-worker, Jimmy (Adam Hagenbuch).

Throughout the episode, the Tanners are visited by a number of surprise guests, including some of their old friends from Full House, who drop by to lend a helping hand (and some comedic relief) during the hectic holiday season. As they work together to pull off the perfect party, the Tanners learn the true meaning of Christmas and the importance of coming together as a family.

With its classic humor, heartwarming moments, and iconic characters, "Oh My Santa" is a fun and festive start to season 4 of Fuller House. Fans of the original series and newcomers alike will delight in this heartwarming holiday episode, which is sure to leave viewers feeling merry and bright.