This takes after "Boboiboy: the Fallen Hero", as the remaining heroes still mourned over their loss.
But there's also a separate story, where it explores about a young teenage human boy, with no memories of the past, has attended the school full of...
Mechabot is alone in the control room and remains depressed from his loss from his closes ones.
When he looks at the photo on the desk and picks it up to look closer, the red robot sees the picture of Amato and baby BoBoiBoy with him.
Oops! This image does not follow our content guidelines. To continue publishing, please remove it or upload a different image.
Causing him to cry and remember about the past when he was still together with them.
.
.
.
Flashback...
Mechabot enters the room, where he sees baby BoBoiBoy in the crib.
While the baby become happy from seeing the red robot visiting him.
This cheerful expression from his master's son makes Mechabot smile out of affectionate. So he tries to make a funny face to make him laugh, which BBB did.
Then, to his surprise, he was caught up by Amato who starts to tease the power sphere if the "destroyer robot" actually has a soft side from the inside.
Which embarrassed Mechabot and tries to tell him to "shut up!" Only to be reminded to not raise a voice in Infront of the baby. While BBB remains cheerful.
End of flashback...
.
.
.
Remembering the loss of BoBoiBoy, while Amato is still nowhere to be found, causes Mechabot to feel completely distraught.
Jericho's eyes start to open as he starts to wake up after hearing a voice.
Then, he sees the same girl wearing a hijab standing in front of him.
"You! Your that girl who attacked us!" He becomes angry for her actions.
Only he finds himself hanging over as both hands are being chained. And realized that he's in the slammer, while the girl in front of the white-haired boy is outside of it.