I stepped out of the TARDIS and smiled. The Doctor closed the door behind us. He sighed.

"Okay, I'm going to stay here by the TARDIS. Take as long as you like." He stepped in front of me. "I won't leave without you."

I smiled. "Thank you, Doctor. I won't be long."

I hugged him before running down my street. I ran to my house and opened the door. I heard the telly playing in the living room. I walked into the living room and Mum and Janessa were there. Janessa saw me and cheered.

"Aridena!" she yelled.

She ran to me and jumped in my arms. I hugged her. "Hey, little sis."

Mum saw me and slowly stood up. "Where were you? It's been three weeks."

"It has?" I asked.

Her lip curled. "Don't play stupid with me! Where were you?!"

"I told you, I was traveling."

Just then, Janessa's friend Luke walked in. Behind him was his mother, Sarah Jane Smith. Luke waved.

"Hey, Aridena. It's good to see you."

I smiled. Sarah Jane nodded at me. Mum just stood there, with her arms crossed. I huffed.

"Listen, Mum, you wouldn't let me travel before so now I am. I met a friend and he's taking me traveling." I sighed with content. "You wouldn't believe what I've seen!"

Mum scowled. "And who's this friend of yours?"

The door to the house opened and the Doctor walked in. He smiled and waved.

"Hello, everyone. I just wanted to pop in and see how everyone is," he said.

Mum growled. "And who are you?!"

He stuck his hand out. "Oh, I'm the Doctor. I'm taking Aridena traveling."

Sarah Jane smiled. "Doctor?"

He looked at her. "Hello, Sarah Jane Smith."

I looked back at the Doctor. "You two know each other?"

"Yes," Sarah Jane answered. "I used to travel with him."

I smiled. "Isn't it amazing?"

She nodded. "Yes."

Mum threw her arms in the air. "Can somebody please explain to me what's going on?!"

I took her into the kitchen. "Mum, the Doctor takes me with him when he travels. You wouldn't believe what I've seen and done."

She crossed her arms. "Try me."

I looked back at the Doctor. "Can I tell her?"

He nodded. I turned back to Mum. "Mum, he has a time machine that takes us through time and space. I just got back from the planet Crysothium. It's a planet made entirely of crystals!"

Mum didn't believe me. "Oh, yeah right! You're not going anywhere with this man!"

I pursed my lips. "You can't stop me, Mum!"

I ran back to the Doctor. "I'm ready to leave."

Sarah Jane walked to the Doctor and took a long look at him. "I have a feeling we'll meet again, Doctor."

He smiled. "Oh, we will, Sarah Jane Smith. You just wait."

The Doctor took my hand. "Are you sure you're ready to go?"

I hesitated. Janessa pouted. "You're leaving already? But…Aridena…I just got to see you." She ran to me. "If you're going, at least take me with you."

The Doctor opened his mouth and then closed it. "Um…I don't think so. Minors aren't allowed."

Janessa teared up. "Oh, alright." She hugged me. "Just, when you get back from space, bring me a souvenir." Then she whispered, "To prove to Mum that everything you said is true."

I smiled. "I will, little sis." I looked at the Doctor. "Let's go."

Mum stopped us. "No way, Aridena. You're not leaving."

I resisted yelling at her. "Mum, all my life you've told me what to do. Everything I ever wanted, you took away from me. All I wanted to do was travel and you took that away, too. Now you're making up excuses, saying I have to take care of Janessa. Does she look like she needs taking care of?"

Janessa looked at Mum. "I am twelve, Mum. I can handle myself."

I nodded. "See, Mum? She's fine. Now, please, let me go. The Doctor will take care of me. Nothing will happen to me. He promised."

I looked at him as something flashed in his eyes. Then it was gone. He managed a smile and nodded.

"Don't worry, Mrs. Nickels. Aridena will be fine."

I turned back to Mum. "Now, I'm going to leave. And you can't stop me. I will be back; I'll always be back. But I have to go."

I hugged her. "I have to."

Mum sighed. "Fine, Aridena." She turned to the Doctor. "If anything happens to my daughter, I'll kill you."

The Doctor nodded. "Yes, yes, I understand."

I took the Doctor's hand. I looked in his eyes and he smiled. Then we ran out of the house and to the TARDIS.