A Family That Battles Together Stays Together! (Japanese: タケシ！ニビジムをすくえ！Takeshi! Save Nibi Gym!) is the first Weekly Pokémon Broadcasting Station side story episode and the fifth episode of Pokémon Chronicles. It first aired in Japan on December 3, 2002, in the United Kingdom on June 8, 2005, and in the United States on June 24, 2006.
Brock is back in Pewter City after his adventures in Johto, but he finds his father Flint hiding at the edge of town. Flint warns him that something terrible has happened: Brock's mother Lola took over the Pewter Gym and turned it into a gaudy Water-type Gym! When Brock sees this, he's furious, but Flint is afraid to act and Lola won't listen. So Brock declares that Flint will battle Lola for the Gym—if Lola loses, the Gym goes back to the way it was. But if she wins, all of Brock's siblings will become Water-type Trainers!
With the Gym now a watery battlefield, Flint's Golem is at a disadvantage. Once Lola's Marill uses Surf, Golem sinks like a rock, and Lola's Blastoise has to fish it out of the water. When Flint starts to walk away, dejected, Lola reminisces about their first battle together. This rekindles their love, but Brock doesn't care. He's not even impressed when Flint and Lola try to patch things up by making the Pewter Gym a Rock-and-Water-type Gym. Brock's brother, Forrest, isn't happy either; he throws a fit and runs out of the house. Forrest doesn't want to be a Gym Leader now that the Pewter Gym isn't a Rock-type Gym, but Brock assures Forrest that he'll fix it.
The next morning, Brock insists on battling Lola for the fate of the Gym. Brock chooses Onix, and Lola chooses Mantine. Brock has Onix use Dig to drain all the water from the battlefield, but Mantine can still swoop through the air and use Water-type attacks. Still, the battle doesn't last long before Onix knocks out Mantine, and now the Gym is back to being a simple, no-frills Rock-type Gym. As for the family, they don't seem to mind. They give Brock a hearty send-off as he heads out to Hoenn, and Forrest promises to battle Brock the next time he returns!
The episode begins where the fifth episode of the original series began so long ago. The narrator introduces Brock, as he looks over Pewter City. A mysterious man warns him to turn back, but Brock immediately recognizes Flint and asks him what he is doing. Flint reminds Brock of the previous glory of the Gym, but then implies that something has happened, specifically his mother. Flint takes Brock to the Gym, which to his horror now contains a hedge!
Brock arrives home where he is met by all of his siblings. His mother, Lola, is putting up a piece of artwork that is apparently a Smeargle masterpiece, as she is becoming an art connoisseur. Brock recalls that the time he was there before she was studying astrological signs, and the time before that she was learning how to juggle yu-yu sticks. Brock comments that she is just being her usual bubbly self and that Flint may be overreacting, but Flint tells him to wait until he sees the inside of the Gym, which now has a lake in it.
The Pokémon come to meet Brock, and while Brock is impressed with Lola's Pokémon, he tells her that it is a Gym and not an aquarium. Flint says that he tried to stop her (having his Rhydon bring rocks from mountaintops into the Gym, which were painted pink, and covering the lake with concrete, which Lola's Gyarados smashed to pieces), but he has now given up. Brock tells Flint that he is going to battle Lola for the Gym. Though his siblings tell Brock that there is no way that Flint's Rock Pokémon can beat Lola's Water Pokémon, Brock tells Flint about how PikachubeatOnix, since he has apparently forgotten.
Lola sends out Marill, while Flint sends out Golem. Golem starts out with an Earthquake. At first, it looks like it has worked, but then Marill turns it around with a Surf attack. This hits Golem, who starts drowning. Lola sends Blastoise to save it. Blastoise helps Golem to recover, and Brock uses a hairdryer to speed up the process. Forrest is impressed by his knowledge of Pokémon. Lola tells Flint that he fought well, and they remember their first battle. Through this, they revive their love for each other. Brock is unimpressed, and still will not let the Gym become a Water Gym.
As Brock and his siblings prepare dinner, Flint and Lola remember the past in the Gym. Flint admits that he thought Lola was getting bored with him, but Lola tells him that he was the one thing that she never got bored of. Over dinner, Brock wants to talk about the Gym, but Flint and Lola are more interested in each other. They announce that the Gym will handle both types of Pokémon. It is Forrest that objects, telling them that they will turn the Gym into a laughing stock and then running off. Brock learns that Forrest wants to become the leader of the Gym when he grows up.
Brock finds Forrest sitting by a river. Forrest wants him to talk about the girls he has met, but Brock wants to talk about him. Forrest is now discouraged as the Gym is ruined and he will always lose to Water Pokémon. Brock vows that "tomorrow the Rock Pokémon will have their day."
The following morning, Flint shows Brock the new sign for the Gym, which Blastoise and Golem can't even hold up. Brock challenges Lola to a battle, stating that if he wins, she must take down her decorations, and the Water Pokémon will have to find another lake.
Inside the Gym, Brock sends out Onix, while Lola sends out Mantine. Onix appears at a disadvantage, perched on a tiny island of rock in the middle of the lake. However, Onix leaps straight up, then dives down into its perch, starting out with Dig. With the rock destroyed, water floods into the new tunnel, which drains all of the water in the lake. Mantine flaps around, unable to move anywhere. Onix comes up underneath it which, while causing damage, allows Mantine to fly. It then launches a Bubble Beam, which Onix counters with Bind. Lola tries to get Mantine to use Confuse Ray, but it fails. However, another Bubble Beam does work. Onix lets go of Mantine, who goes into a third Bubble Beam, but Onix uses a Tail Slam, which makes Mantine faint. The Pewter Gym remains a Rock-only Gym, though Flint convinces the reluctant Brock to compromise and keep the color scheme.
Forrest congratulates Brock on his victory, and Brock assures him that he will be as good someday. On that note, he decides to give Onix, Geodude, and Crobat to Forrest to train with. Forrest promises to work to become a really strong Trainer. Later, Brock is standing outside in his Hoennclothes, which Lola has made for him. Lola asks Brock if he has everything, and Brock confirms he has and shows he will be taking Forretress with him to Hoenn, as it's not long since it evolved and he would like to do some training with it. After saying goodbye, Brock heads to Hoenn to meet up with Ash once more.
Interestingly, despite the fact that the next episode states that the PIA shuts down any and all Pokémon Gyms that are "unsafe, unclean, and uncool", the Pewter Gym seems to avoid being shut down even though it failed the "unsafe" requirement, as its water areas are not safe for Rock-type Pokémon.
In the English dub, Lola was stated to have passed away in Showdown in Pewter City. However, she is alive in this episode and her absence was retroactively explained to be a result of her many endeavors.
When Brock tells Flint how Ash once managed to defeat Onix with his Pikachu, Flint asks how he did that, despite having assisted Ash in powering up his Pikachu to be able to defeat Onix by cheating, and Brock knew it.
Two 22-second scenes are removed from the end showing Brock leaving Geodude, Onix, and Crobat with Forrest.
The dub also cuts out 18 seconds of Brock's conversation with Forrest at the river, in which Brock says that Pokémon Breeders get to learn about all the different types of Pokémon.
The dub portrays Forrest as being girl-crazy like Brock, but the original does not.
Lola's hobbies are changed from ballroom dancing, gardening, and astronomical observation in the original to astrological signs, juggling yu yu sticks, and yodeling in the dub.