Co-written by SuperSaiyan2Link.
In the aftermath, Pan and the five Z-Fighters saw Yamcha's dead body, crumpled over in a crater as per the vision she saw of the others in the scroll prior to the mission. The Supreme Kai of Time immediately jumped onto comms to scold Pan for nearly altering the past, to which Trunks attempted to deflate the situation by stating he understood why she did what she did. In spite of this, the Supreme Kai of Time gave her ultimatum: the objective was to ensure Gohan, Krillin, and Piccolo's survival, and not to interfere with Tien and Chiaotzu, no matter what. The thought was tearing her apart inside, but Pan agreed and attempted to compose herself in the face of the imminent battle.
Vegeta laughed at the fallen Z-Fighter and told the rest to pick up their trash. Pan was shocked at hearing Vegeta speaking like this, but tried telling herself that he would change. Soon after, instead of waiting on the Saibamen first, Nappa insisted he join in the battle to finish them quickly. Vegeta allowed this and the Z-Fighters now had to fend off both the four remaining Saibamen and Nappa's assault. Pan had to zoom across the area, stopping Saibamen from wearing down Krillin and guarding Gohan alongside Piccolo.
Piccolo, seeing Tien struggling against Nappa, insisted that she help him instead. As much as she wanted to, she remained where she was, even as she saw Tien having his left wrist chopped by Nappa's strike. Krillin was preparing a technique of sorts, but found himself swarmed by four Saibamen at once. As they tried to dog pile him, Pan blew them back with a burst of ki, then slammed them to the ground with swings from the power pole. Krillin noted its similarity to the one Goku used, but then focused on the opportunity in front of him, firing off what seemed to be a slow-moving blast until it split apart. The scattering bullets then struck down and destroyed the four Saibamen, leaving only one remaining.
Seeing Gohan about to be grappled by the last Saibamen, Pan flew in to stop it, but found the intended grapple stopped by Piccolo, who grabbed it by his hand. After throwing the Saibamen and vaporizing it with a mouth beam, he questioned why she was so concerned with protecting Gohan, even as far back as their battle against Raditz a year prior. Trying to answer him without giving away anything, Pan responded that she didn't want "the kid" getting hurt. He scoffed at this, telling her to watch Gohan since she appeared more concerned with his safety than that of "those two" (Tien and Chiaotzu).
Knowing she couldn't interfere, she stood guarding Gohan as she saw Tien and Chiaotzu failing to harm Nappa, and Krillin and Piccolo trying to assist them. Gohan turned to her and asked why she wasn't helping them, to which Pan couldn't come up with an answer for the boy that would become her father. Upon seeing Chiaotzu lunging onto Nappa's back, Gohan told her he wasn't going to stand by and do nothing, and joined the battle. Pan followed and also joined in the assault, but once a glow began to emerge from Chiaotzu, she and the other Z-Fighters backed up. Tien, seeing that Chiaotzu was about to detonate himself, tried telling him to stop, but his life long friend was content with his decision and left smoke and debris in the aftermath.
To both Pan's and Tien's anguish, they saw that Nappa was barely harmed and that Chaiotzu's sacrifice was for nothing. As Nappa flew to attack Tien, Piccolo and Krillin managed to knock him away in Gohan's direction. Piccolo shouted at Gohan to attack with everything he had, but Gohan instead ducked out of the way. Nappa recovered and clashed with Krillin and Piccolo, knocking them down. The Namekian turned to Pan, blaming her for Gohan hesitating from watching her a year prior. In his last-ditch effort, Tien fired off a powered up one-handed Tri-Beam at Nappa, putting everything into it, only to see the Saiyan dodging it.
After Tien fell down dead, Vegeta taunted him for dying "like a dog", further revealing to Pan the kind of man Vegeta once was. She was then informed that the beam was supposed to damage Nappa and his armor, and, since it was prevented, this could cause any number of unwarranted changes. As she was told to try inflicting the damage herself, she saw Nappa already coming right towards her. Since, according to Trunks, a three hour stop to the fight would commence at some point, it was advised that she try to keep Nappa from the three remaining Z-Fighters for the time being.
In the distance from the four spectators, with Krillin, Piccolo, and Gohan making no moves against Vegeta due to the glow of power he emanated, Pan and Nappa battled one-on-one, finding themselves more evenly matched than either would have expected. Pan started to worry if Nappa was pushing her and what this would mean in the case of Vegeta, and Nappa openly wondered if this "scrawny girl" was actually a Saiyan like him. Finally, she managed to catch Nappa with her Maiden's Blast, which seared his armor and partially hurt him. Just then, Vegeta summoned Nappa, and the two returned to the main battleground to discover that Vegeta intended for the fighting to stop for three hours maximum. When realizing Vegeta's only reason for doing this was because he was intrigued from hearing about the power of "Kakarot" from the others, Pan began to hope that this would be a point of redemption for Bulla's father.
Not wanting Pan to be bombarded from questions, the Supreme Kai of Time had Pan teleported out before anyone could notice, removing the memory of her being there for the time being. She returned to the Time Nest, being informed that there was another change already beginning to occur and that she had only a brief duration to rest. She asked how long she had to protect the remaining three before Goku arrived, to which Trunks told her it'd take several minutes, then fumblingly stated not to worry about Piccolo. Upon catching this, the Supreme Kai of Time urged Pan that what Piccolo was going to do would be a pivotal moment in both his and Gohan's lives, and she must not stop it. Seeing the Supreme Kai of Time tiring from holding back the new change, Pan was sent back, only for everyone to wonder how she disappeared and where she was for the three hours they waited.
Piccolo pointed out that three hours earlier (in his time), Pan wasn't using her full power against Nappa, and began to question just whose side she was really on, but Gohan and Krillin insisted they needed all the help they could get. Vegeta, his scouter's timer having gone off, commanded Nappa to get back on the attack. After Piccolo's plan to grab and pull onto Nappa's tail succeeded, but with little to no effect on the Saiyan, the Namekian was knocked unconscious, leaving it up to Pan, Krillin, and Gohan.
When Krillin threw his Destructo-Disk, Nappa simply tilted his head to avoid it. Even Gohan, who at this point in history was supposed to be getting in major blows, found Nappa's defenses sharper than before. Pan intervened, keeping Nappa at bay with the Power Pole. Swinging her grandfather's weapon the hardest she could, it struck Nappa's cheek, leaving a blunt scar.
This combined with a burning blast to his back by the now-conscious Piccolo and a pummeling through rock by Gohan enraged the Saiyan. He fired off a massive beam toward Gohan, who was too scared to move. Before the thought came to Pan to intervene, she saw Piccolo shielding Gohan, and understood that the moment before her was the day Piccolo changed for the better.
Piccolo fell, his wounds fatal, and his last words heard only by Gohan. Soon after Piccolo died, everyone nearby could sense a presence approaching them from a far distance: Goku. Vegeta ordered Nappa to finish them off quickly to demoralize him, and Nappa went right for Gohan. Krillin and Pan both stood before him, but with a gesture of his hands, both were blown away from him. He swung his hand down on Gohan, but found no trace of him. Everyone turned to see Gohan sitting on the Flying Nimbus and Goku standing before them: he had finally arrived to put things right.
Instead of being infuriated or nervous, the mysterious figure seemed content to see his arrival, indicating to her partner that history could still change yet.