(Happens after or during Bramblestar's Storm I honestly can't remember sorry)
Graystripe wandered over to Lilypaw, who was still grieving for Seedpaw.
"You want to hear another story about the three clans?" Lilypaw looked up.
"Yes. I wish Seedpaw was still here to hear it." Tears formed in the corners of her eyes. He laid down next to her and started to tell the story.
"Congratulations, Desertrose! You're expecting kits." Shatteredshell meowed happily.
Waveclan got bigger every day. Thornstar started to worry. He feared they were getting ready for invasion. He hoped they weren't driven out. Everybody knew what happened when Waveclan got big last time. Fishclan was driven out.
"We have to leave! Waveclan is invading tonight." Thronstar said. Murmurs ran rampid through the clan. They left.
"Where will we go now?" Berrylark mewed.
"We will find somewhere." Thornstar said. Shatteredshell padded up to Thornstar.
"You have to let me and Desertrose go a different way. Destiny requires it. Starclan requires it." Shatteredshell said.
"Very well. I expect that you will come back."
"Yes. But with only one of your kits. I'm sorry."
"I will remember it always." Thornstar said solemnly. Shatteredshell trotted over to Desertrose, and murmured something. She looked at Thronstar for confirmation. He nodded. She padded up to him and they touched noses.
"I will see you again, my love."
"I love you."
Shatteredshell and Desertrose traveled for a moon and a half. They arrived outside of mother mouth, which is like the Moonpool.
"This is where you will have your kits." They fell asleep.
"You're done. A she kit and a tom." Desertrose looked down at her kits.
"How can I leave one?" She whispered. "They're both so beautiful. Graykit for the tom, and Shellkit for the she kit. She's named after you and your courage. You traveled all this way for Starclan." Shatteredshell smiled. Suddenly a cat padded into the cave. They tensed. A tortoiseshell she cat walked into the light of the Moonstone.
"My name is Spottedpaw. Starclan sent me here. Would you happen to know why?"
"What clan are you from?" Shatteredshell said.
"Thunderclan."
"Our prophecy said
"Gray is the color of lightning. Lightning makes fire. Gray must go to Thunder."
"Graykit has to go with her." Desertrose meowed sadly.
"Are you refugees? From another clan?"
"Yes. We were driven out." Desertrose mewed.
"Are you from Skyclan?!" She said.
"No. I'm sorry. They have moved on. We are from Duneclan." Shatteredshell said.
"Oh." Spottedpaw said sadly. She sat down. She looked at Desertrose.
"Tell me your story. Tell me all of it. So I can pass it down when Graykit is old enough." So Desertrose told her. Spottedpaw was crying by the end.
"I'm so sorry you had to go through that. But I will make sure Graykit has a good life. He will fulfill his destiny. The fire will burn. Any cat who tries to stop the fire will stop it over my dead body."
"Thank you."
"Why do you think I tell that story?" Lilypaw thought hard, fitting the pieces together.
"You are Graykit. Spottedpaw was Spottedleaf. That is the story of how you got to Thunderclan."
"You're smart. You and Seedkit are the only ones I've ever told. You can pass the story down to your kits. And maybe, one day, all 8 clans will be together again."
"Eight? Wouldn't it be seven?" Lilypaw asked.
"You will see soon enough. Now let's get some rest. The flood water will go down more tomorrow."
