"Jimmy, who's he?" Walt asked when he saw the little kid holding Jim's hand.
"Hey!! Those are my clothes!!" Cal yelled when he saw the orange dinosaur t-shirt on Isaac.
"Walt, Cal... You need to calm down because what I'm going to tell you could be unbelievable but it's true." Jim made a pause before he continued. "This kid is... our brother, Isaac."
"No way!" Both kids shouted in unison. "But Isaac is way more bigger!" "And hairier!" Isaac reddened after hearing that. "Cool! Big bro is small like us!!"
"I'm glad you understood." Jim said. "It's important that you keep the secret, no one else could know that Isaac has shrunk, ok?" They nodded.
"Why did you do that? They are just kids! We can't trust them!" Isaac told Jim.
"Hey, watch your words!" Cal replied. "You're as kid as us!"
"I trust them and we need their help." Jim told Isaac. "When mom and dad come back I'll tell them that you went to your date and that Walt and Cal are going to have a sleepover with a friend."
"Are we going to have a sleepover?" Walt asked excitedly.
"Yes, with Isaac." Jim replied. "And when mom and dad asked about it you're going to tell them that he's a friend from school, ok?" They nodded.
"I'm not ok!" Isaac said. "I'm not going to pretend I'm a kid! I have a date tonight!"
"Well, you can go if you want." Jim grinned. "Mom and dad are going to come back soon, so hurry and make a choice!"
Isaac was thinking about when he heard his parents' car coming to the garage. He was running out of time and he hadn't a lot of choices. "Ok, I'm in but I need to tell Chloe that I'm not going to our date..."
"Ok, send her a message." Jim said.
"I can't, she didn't give me her phone number." Isaac sighed. "She didn't like to give it until the second date. I need to go, she's in the movies."
"Jimmy, Isaac!! Help us with the groceries!" Their father called as he entered the house. "Oh, hi guys! Who's this young man?"
"He's... uhm... Casey" Cal said. "He's a friend from school."
"Yeah, we invite him to a sleepover tonight!" Walt said. "Can he stay?"
"Ok, but we need to ask to his parents too."
"I'd called them." Jim intervened. "They said that it's ok if I keep an eye on them."
Their father agreed and kept unpacking the groceries with their mother. Jim and the kids helped them while he told them that Isaac has already left to a date. When they finished, their parents started to make the dinner while they went to the twins' bedroom.
"Now what?" Isaac asked. "Mom and dad will never let us go to the movies so late."
"We can escape." Walt suggested.
"No, it's too risky." Cal replied. "We can't go but you can, Jim."
"Yes, leave it to me!" Jim smiled.
"I count on you!" Isaac said. "Tell her something that doesn't make her to hate me, please! I really like that girl!"
"Yuck!" Both twins said in unison, unlike them Isaac still has his teenage mind. Jim just giggled before he left the kids.
"Ok, it resulted well." Jim grinned while he walked to his bedroom. "Now, phase two."