This was an au that original at first. Chara and asriel die after going to the surface. But something strange happened. Chara's soul came back and went back to her body. So chara soon found asriel (now flowey) and they went to Dr. Gaster, looking for a possible way to cure asriel. So he ran experiments upon him. Soon though, he ran tests on Chara also, making her faster, stronger, and her determination to turn evil. Flowey soon turned evil also, with all the experiments getting to him, thus both of them wanting to destroy the underground, and afterwards, humanity. They began their fight in the castle, thankfully, Asgore and everyone else evacuated to the ruins. Now, it's up to Asgore, Toriel, Sans, Papyrus, Gaster, Undyne, and the six humans before you, to keep them out of the ruins, everyday they use more energy trying to keep Chara and Flowey out. Chara is inhumanly strong, fast, and durable. Flowey can summon his own version of gaster blasters that sends seeds flying everywhere. Now, two humans have fallen, and their actions can decide whether the monsters escape this war and return to the surface, or if they will help Chara and Flowey in their evil cause to kill every last monster...
