One morning, Hiro woke up early. He had a surprise for Baymax. So he got a microbot and dropped it on his foot.
"OW!", Hiro cried out in pain. Immediately, Baymax was activated from his box.
"Hello, Hiro. I heard a sound of distress. What seems to be the trouble?", said Baymax.
"Oh, nothing, Baymax. I just wanted to say... I have a surprise for you."
"Really? What is it?"
"Well, come with me and you'll see," Hiro then took Baymax by the hand and brought him outside.
Later...
Hiro and Baymax arrived at SFT.
"Okay, Baymax. Now close your eyes and come with me," Hiro instructed.
"Very well," said Baymax and did so. Baymax kept holding Hiro's hand as they walked into SFT.
"Okay, you can open them now!", Hiro exclaimed. Baymax opened them.
"SURPRISE!" shouted Hiro and his friends.
"WHOA! You all almost gave me a heart attack!", said Baymax. Then he added, "And I am aware it's just an expression."
Hiro and his friends laughed.
"So, WHO'S READY FOR SOME CAKE?!", shouted Fred.
"Whoa, simmer down there, Fred. Let's sing to Baymax first," said GoGo.
"Oh. Right. Of course," said Fred, embarrassed.
Everyone gathered around sang to Baymax.
"Happy birthday to you, happy birthday to you, happy birthday, dear Baymax, happy birthday to you," everyone sang.
"CHA CHA CHA!", added Fred.
"Oh, Fred," GoGo rolled her eyes.
"Thank you all so much for the birthday greetings," said Baymax.
"You're welcome, buddy. Happy birthday," Hiro said.
"Here, have a lollipop for being very nice and thoughtful," said Baymax as he gave Hiro a wrapped lollipop.
"Oh, cool," said Hiro as he took the lollipop.
"So how old are you now anyway? Like... 2 or something?", asked GoGo.
"I suppose so since Tadashi created me about 2 years ago," answered Baymax.
"Well, happy 2nd birthday, I guess," said Wasabi.
"We love you, Baymax," said Hiro and they all hugged Baymax.
"I love you, too," Baymax said as he closed his eyes peacefully and embraced all of his friends.