The next morning, Robin went to go meet with Adam for breakfast. Barney was nowhere to be found. Robin just shrugged it off.

Maybe he finally decided to leave me alone and go back to heaven, she thought to herself.

Meanwhile, Marshall and Lily walked out of a costume shop with Barney, who was already in Adam's body.

"You sure you wanna do this?" asked Marshall.

"Absolutely," said Barney. "This has got to work!"

He walked over to the french crepe restaurant where Robin was waiting. Her eyes widened when she saw "Adam".

"Hello, Robin!" said Barney/Adam.

"Oh, my, gosh!" Robin said shocked.

It turned out that Barney went to a costume shop and bought a banana costume as Adam. He put it on and got a pair of maracas from Lily and Marshall.

"IT'S PEANUT BUTTER JELLY TIME!" sang Barney/Adam as he shook the maracas and danced around. "PEANUT BUTTER JELLY TIME, WHERE HE AT? WHERE HE AT? WHERE HE AT?"

Robin stared in shock as the dance went on. As soon as Barney was done dancing, she continued to stare.

"So?" asked Barney/Adam.

Suddenly, Barney was sent out of Adam's body and he hit the wall.

"Ow!" he yelped in pain.

Adam suddenly found himself standing there, in the banana suit. He was smiling and that was when he pulled a box out of his pocket.

"Robin Scherbatsky," he said, getting down on one knee and opening the box to reveal a shiny, sparkling engagement ring. "Will you marry me?"

Everyone in the restaurant stared at the couple. Robin's eyes filled with tears and she smiled. "Yes!" she said excitedly.

Everyone in the restaurant applauded as Adam slipped the ring onto Robin's finger and they hugged and kissed.

Barney walked out of the restaurant, rubbing his head. "Ohh..." he groaned. "What just happened?"

"Um, I hate to break it to you Barney, but..." Lily said until she pointed at the restaurant where Adam and Robin were kissing in the window. Barney's jaw dropped.

"No!" he cried. "This can't be happening!"

"How did you get out of his body?" asked Marshall.

Barney shook his head. "I don't know what happened," he said. "But for some reason, I felt some kind of force push me out. I didn't feel this when I was Ted."

The group stared at the restaurant in confusion...

"I'm engaged!" Robin said to her friends later at MacLaren's.

"Congratulations!" said Ted as he smiled and hugged Robin.

"Congrats," Marshall and Lily said nervously as they applauded.

"We should celebrate!" said Ted. "Let's all go have dinner! My treat!"

"Awesome, I'm down," agreed Robin.

So the group went to a restaurant nearby called The Dancing Sombrero, a Mexican restaurant and had an enjoyable dinner.

Later, back at Robin's apartment, Barney was fixing his tie in the mirror of Robin's room. He looked down at Stormy, who was sitting on the bed.

"How do I look, Stormy?" he asked the kitten.

Stormy made a mew sound.

"Fantastic!" Barney said in approval. "Suit up!"

He snapped his fingers and a little suit appeared on Stormy. He flopped over.

The door clicked open and in came Robin. "Hey Barney," she said.

"Hey," Barney answered back, walking over to Robin.

"I'm surprised you weren't following me around like you've been doing," Robin said as she took off her coat and hung it up.

"I was doing...angel stuff," lied Barney. The truth was, he didn't want to be with Robin in case she went off with Adam.

"Does 'angel stuff' involve dressing up my cat in a suit?" asked Robin as she pointed at Stormy, who was still on his side.

"...Kind of..." Barney said slowly.

"Take it off!" Robin demanded.

Barney rolled his eyes and snapped again. The suit disappeared off of Stormy. He sat up and purred.

"I think I know why you haven't been following me," said Robin. "It's because you don't like Adam!"

"Robin, it's not that-" Barney began to say.

"-Yes it is!" shouted Robin. "Like I've been saying, you're jealous of him!"

"Why should I be jealous?" asked Barney, beginning to raise his voice. "At least I'm not Canadian!"

"You leave Canada out of this!" cried Robin. "And you were an American! You were Barney Stinson, you were a human, you were a womanizer, you were a prankster, but one thing you are still is a jerk! I'm going to marry Adam and move back to Canada and you can leave us alone and go back to heaven where you belong! Actually, you should have been in hell but I don't know how you got away with it!"

Barney took a deep breath. "If that's what going to make you happy, fine," he said quietly. Then, he disappeared.

Robin stood there and stared at where Barney was standing...

"She said WHAT to you?" yelled Marshall to Barney.

Barney appeared at Marshall and Lily's house after having the fight with Robin. Marshall was drinking a beer, Barney was drinking a beer that was brewed from an aurora borealis, and Lily was eating spaghetti.

"She told me to go back to heaven and leave her alone," replied Barney. "I don't understand what's wrong with that woman."

"Barney, I think I understand why you were expelled out of Adam's body," spoke up Lily. "It's because of the love he feels for Robin."

"Then what's wrong with the love I feel for Robin?" blurted out Barney.

Marshall and Lily froze, shocked.

"Wait, you're in love with Robin?" asked Marshall.

Barney blinked back tears. "I am," he confessed. "My last thoughts were of her before my death, glad that she was going to be safe, and I am sent from heaven to help protect her, but she's blocking me out because of that con artist! I wish I weren't dead!"

Barney tossed his beer bottle and buried his face in his hands, sobbing. Marshall and Lily exchanged glances. They had never seen Barney cry real tears before. In the past, he cried crocodile tears, but never real tears. Lily stood up and walked over to Barney to give him a hug. Marshall went over, as well. They both wrapped their arms around Barney and Barney wrapped his arms around them.

The door opened and in came Ted. "Hey guys, I just realized I forgot-" he said until he saw who Marshall and Lily were hugging. "Barney?"

Barney looked up and saw Ted, who walked over to him.

"You're not dead?" he asked.

"I'm dead, alright," Barney said sadly.

"Barney's going through a hard time, Ted," Lily explained. "He was sent to guard Robin and she fell in love with Adam but Barney's in love with Robin and she's going to run off to Canada with Adam, marry him and then get all her money stolen."

"Barney, if you're an angel, then why aren't you stopping her?" asked Ted.

"I tried," Barney replied. "I give up."

"The Barney I used to know never gave up when it came to sleeping with women!" Ted exclaimed. "But you're an angel. You can't be in love with a human. The only way you guys can be together is if Robin died, and no, we're not going to kill Robin just so you can sleep with her."

"I don't want to sleep with her," said Barney. "I just want to be with her, hold her hand, kiss her, you know, love her. But unfortunately, once I set things right again, I'm going to be sent back to heaven and I'll never see her again until she dies." He paused for a few seconds. "I think I know what to do."

Suddenly, he disappeared and reappeared in Robin's apartment, where she was lying in bed. She stood up when she saw him.

"Barney, I thought I told you to-" she said until suddenly, Barney went over to her and pressed his lips against Robin's, kissing her passionately. She felt warm and fuzzy inside, something she didn't even feel for Adam. She wrapped her arms around Barney's neck and Barney's hands lowered until he was holding her waist. Then, they let go and broke the kiss.

"I love you, Robin," said Barney.

Tears welled up in Robin's eyes and she smiled. "Barney..." she said longingly. "I love you, too."

She hugged him as tight as she could. Barney hugged back.

"Let's just lie down for a little bit," suggested Robin, taking her hand into Barney's.

Barney smiled. Without a word, he and Robin lied on her bed, holding hands.

After what seemed like only a few minutes when it was really an hour, Ted, Marshall, and Lily burst in.

"Robin! Barney!" they called.

Robin and Barney sat up, got off from the bed, and ran to the living room where they found their friends.

"Wait, you guys can see Barney?" Robin asked in shock.

"The whole time!" Lily confessed.

"Last slap!" said Marshall as he slapped Barney in the face. He and Barney had a Slap Bet several years ago and now Marshall was using his last slap.

"Ouchies!" he cried.

"And that's for saying Lily always ate for two!" Marshall said.

"Thanks, bro," said Barney.

"Robin, we've got some bad news," said Ted. "Turn on the TV."

Robin turned on the TV and a news reporter was on it, reporting.

"...In other news tonight, 35-year-old Adam Sanchez of Canada was shot to death tonight after a police shootout," said the female reporter. "The man was formerly an employee of Goliath National Bank and Canada Banking Company. However, his past was revealed that he was a con artist, going all the way back to Canada from 2000 until 2003 and the US from 2003 to today."

Robin's jaw dropped open. "He-He was a con artist?" she cried in horror.

"That's what I tried to tell you!" exclaimed Barney.

"Oh, I'm so sorry Barney!" Robin said with tears falling down her cheeks. "I should have listened to you."

"Well then, that teaches you a lesson," joked Barney. "Always listen to angels!"

Everyone laughed.

Suddenly, Barney began to shine a bright white light.

"What's going on?" Ted yelled as he and the gang shielded their eyes.

"I have to go," Barney said sadly. "My time here is up."

"No!" everyone cried.

"I'm sorry guys," said Barney.

One by one, the gang went to the roof, where Barney stood near the edge of the building, preparing himself to say goodbye.

"I guess this is our final goodbye," Lily said tearfully as Marshall held onto her.

Barney smiled and gave Lily a hug. "Lily, your baby is going to be healthy and he's going to bring you and Marshall lots of joy," he said.

Barney hugged Marshall next. "Marshall, you're gonna save the world, bro!"

Marshall smiled sadly and fist bumped Barney.

Barney hugged Ted and patted his back. "Ted, you're going to find that wife of yours," Barney wished him. "Don't give up, you're almost there. And when you do find her, you have my best wishes. I'll be looking down on your wedding."

Ted grinned. "Thanks, man." he said.

"And Robin..." Barney said tearfully. He kissed her again. "Don't be sad. Find a better man and get married. Have children and live a happy life. When it's time for you to go, I'll be waiting for you up there."

Robin smiled tearfully. "I'll be looking for you," she said.

Barney walked over to the edge of the building. He looked up at the full moon, shining in the perfectly clear New York City skyline. He turned back to his friends and gave a thumbs up.

"SUIT UP!" he yelled.

He closed his eyes and his body turned into hundreds of tiny, white and silver butterflies. They scattered and flew away into the bright night sky. The gang looked on, sadly. Then, they turned around and went back into Robin's building...

And so, kids, that was how your Uncle Barney ended up dying and going to heaven. He was a guardian angel once and he'll always be a guardian angel for Uncle Marshall, Aunt Lily, Aunt Robin, and us. It's sad that you weren't able to meet him, but I'm sure one day, we'll all be together again. Just remember when you're feeling sad, alone, or in trouble, Uncle Barney is watching and he's smiling down upon you.

(the camera pans down onto a picture of Ted, his future wife, and his children, all smiling in front of a beautiful house with green grass. Next to the family was a beam of light, representing Barney).