Agumon is sad because his partner Tai went missing after he saved T.K., he starts sobbing as he misses him. As he was sobbing, he tries to contact Tai, but no respond, and that caused him to cry.
As Agumon is crying, twelve-year old Yugo finds him and sees him crying, telling him what's wrong.
"Agumon, what's wrong." said Yugo.
"Huh...oh...Yugo..." said Agumon.
"I, i, I miss Tai!" cried Agumon.
"You, you miss Tai since he's gone missing?" said Yugo.
"Yes!" cried Agumon.
Yugo comforts Agumon about Tai's disappearance, shushing him as he hugs him.
"Shh, shh, it's okay Agumon, please don't cry, we will find Tai okay." said Yugo as he hugs Agumon.
"Yeah, I miss Tai already, he's so cool..." sobbed Agumon as he got hugged by Yugo.
"Listen Agumon, would you like to sing a song, my adoptive father used to sing it to me when I was a baby after my biological parents disappeared." said Yugo.
"Huh...oh...okay..." said Agumon.
As Agumon is still hugging Yugo, the boy, Yugo, sings to Agumon after Tai disappeared, it is called "Somewhere Over the Rainbow" by Judy Garland.
Yugo:
Somewhere, over the rainbow, way up high
There's a land that I heard of once in a lullaby
Somewhere, over the rainbow, skies are blue
And the dreams that you dare to dream really do come true
Someday I'll wish upon a star
And wake up where the clouds are far behind me
Where troubles melt like lemon drops
Away above the chimney tops
That's where you'll find me
Somewhere over the rainbow, bluebirds fly
Birds fly over the rainbow
Why then, oh why can't I?
If happy little bluebirds fly
Beyond the rainbow
Why, oh why, can't I?
Yugo hums some parts after he sang to Agumon. Since he remember his adoptive father's song when he was a baby, Agumon finally get some sleep, as the pre-teen boy is humming some parts, he puts Agumon into a bed and puts him a blanket and a pillow, after he hummed and finishes the song, Yugo kissed him on his cheek, quietly closing the door.
After closing the door, Yugo's friend, Evangelyne, asks him if there's anything alright.
"Yugo, is everything alright." said Eva.
"Yes Eva, everything is alright, I calmed Agumon down and I made him fell asleep." said Yugo.
"You have a cute singing voice you have, but I totally feel bad for Agumon that Tai is disappeared." said Eva as she remembers Tai.
"Don't worry Eva, we will find him, let's go, I don't wanna wake Agumon." said Yugo.
"May Agumon sleep well, let's go and find Tai." said Eva.
As Agumon finally sleeps in peace, Yugo and Evangelyne continue their mission to find Agumon's partner Tai.