Saving her family

Toph was glad to reunite with her only granddaughter, Opal.

By keeping an eye on Zaofu via the vines of the Foggy Swamp, Toph saw that Suyin and her family had been captured by Kuvira. She traveled to the metal city, though by the time she arrived, her daughter,son-in-law, and grandchildren had already been moved to a prison camp. She later found Lin, Opal, and Bolin surveying the area around the city in order to determine where Suyin and the rest of the Beifong family were held captive. Approaching them, she told her daughter they should not bother trying to get closer to the city, since the prisoners had been transported elsewhere. When Lin greeted her as "chief", she acknowledged her daughter in the same fashion, before being warmly hugged by Opal. Entangling herself from the embrace, Toph fondly noted that Opal only reached to her waist the last time they had been together. Her demeanor switched to annoyance, however, when Bolin started to hysterically squeal and hop up and down over being in her presence and she abrasively asked him if he needed to use the bathroom. Ignoring Bolin's antics for the rest, she included the threesome on her discovery that Suyin and her family had been moved to a prison camp. When Bolin pinpointed its location to be that of a nearby factory and reeducation facility, Toph asked her granddaughter how she had ended up dating the kind of "dipstick" that worked for Kuvira. Now knowing where to go, Toph was introduced to Juicy, though immediately noted that the "leaky, nasty thing" smelled worse than Appa.

En route to the factory, Toph told Bolin that it had been a "little while now, couple years" since she had seen Lin. As her daughter specified that it had been twenty years, she casually waved the comment off, noting that time flew for someone her age, and changed the subject to her wonder that Lin had come to save Suyin. She was pleased to learn that her daughters had moved past their grievances with each other, though failed to take note of Lin's grudge toward her.

Much to Bolin's delight, Toph sensed that Zhu Li was lying when she toldKuvira that she was doing everything she could to fix the spirit energy cannon.

Arriving at the factory, they all sneaked in and Toph used her metalbending to tear a hole in the hangar's wall, before seamlessly sealing it again. She used her seismic sense to deduce Suyin and her family were being kept in a cavern underneath the factory; although it felt empty, she could sense the mecha suits guarding the place. When Kuvira entered the hangar, they all hid and overheard her conversation with Baatar Jr. and Zhu Li. When the latter told Kuvira that she was doing everything she could to fix the problems with the spirit energy cannon, Toph noted that she was lying, much to Bolin's delight.

Retreating back to the hills surrounding the facility, Toph noted with irritation that she had not come to fight with Kuvira or destroy a cannon, as Opal and Bolin, respectively, suggested to do and emphasized that she was solely there to save her family, adding that it would already take everything that they had to survive the endeavor. The foursome decided to postpone their rescue mission until the next day after Bolin reasoned that the most ideal moment to strike would be during the testing of the cannon, since Kuvira's desire to have all the troops and workers present would leave the factory mostly deserted.

As they had not seen each other in twenty years, Toph and Lin had unresolved issues, mainly about Toph's refusal to talk about Lin's father.

During dinner, Toph told Bolin that she used to have a metalbending academy where even a "blockhead" like him could have learned metalbending, ignoring Lin's sarcastic jab about her being a "real sensitive instructor". She was surprised to hear that Bolin had learned the rare skill of lavabending, complimenting him on the possibility of being talented after all, much to his excitement. When Lin scoffed at the conversation, sarcastically noting that Toph was "real encouraging", Toph bit back that she was blind, not deaf. Upon being asked who Lin's father was, she casually answered that he was a nice man named Kanto with whom it did not work out. Sensing her daughter's "enraged breathing", Toph ordered her to say whatever it was she wanted to say so they could "get it over with". Infuriated even more by that comment, Lin snapped at Toph that growing up without a father and never even discussing him weighed heavily on her, though her mother waved it off by stating that those were all things of the past. Being blamed for not knowing or caring why Lin was furious with her, Toph solemnly accepted her daughter's decision of not wanting anything more to do with her after they had saved Suyin if that was what would make her happy.

Toph helped Lin and Bolin to freeSuyin and her family.

The following day, after Opal alerted them that the demonstration was about to start, Toph, Lin, and Bolin burrowed themselves a tunnel toward the underground cavern where the Beifong family was being held captive. Warning everyone that the guards were on the other side of the door at the opposite side of the chasm, she noted that they had to be quiet, lest they would be discovered. With Bolin's help, she catapulted Lin atop the wooden cell, so she could swing back all the prisoners on her cable and Bolin could catch them. Everything went well, until the acrophobic Baatar inadvertently alerted the guards to their presence. Despite this setback, they managed to free the entire family and Toph warmly hugged her youngest daughter, before they all made their way back to the surface and reunited with Opal. When Bolin declared he would save Zhu Li at the abandoned town that was to be blown up by the cannon, Toph stated that he did not know for sure that she was on their side as she could have been lying before to cover up a mistake she had made as opposed to deliberately sabotaging the machine as Bolin believed. After he and Opal left anyway, Toph declared to be through with fighting and refused to join Lin, Suyin, Wei, and Wing in their attempt to stop Kuvira. She stayed behind with Baatar and Huan, though when the former tried to make smalltalk, addressing her as "mother", she quickly shut him down by reminding him that he should never address her as such. Despite her initial refusal, Toph ultimately interfered in the battle when the foursome found themselves outnumbered and surrounded and saved them by shifting the earth underneath all their opponents, bringing them down. As Opal, Bolin, and Zhu Li returned on Juicy, Toph shouted at Kuvira that she gave metalbenders a bad name, before escaping to safety on the bison.

Both apologizing for their mistakes, Toph and Lin reconciled.

Landing in a bamboo forest, Toph was thanked by her daughters for having come to their rescue. When Lin apologized for all she had said the previous night, Toph acknowledged that she had not been the best mother, though was nonetheless proud of the women her daughters had become. She noted that if they could find it in their hearts to not hate her, that would be enough for her. She and Lin shared an embrace, though found their moment ruined by Bolin, who hugged them both, while emphasizing the importance of family using his own as an example. Irritated, Toph entangled herself from the embrace and sarcastically wished her family an enjoyable ride back to Republic City with the "gumflapper". Upon being asked by Opal if she was not joining them, Toph light-heartedly explained that her fighting days were over due to her old age and while walking away, she joyfully added that it was their time now.[23]