The Important Notebook

"**The Important Notebook**", also known as "**Careful Notebook**" in the original Chinese, is the seventh episode of the eighth season of *Happy Heroes*, and the 371st episode of the series overall.

## Summary

THE SECTION BELOW DESCRIBES MAJOR PLOT-PROGRESSING ELEMENTS OR OTHER POTENTIAL SPOILERS. PLEASE READ AT YOUR OWN RISK.

Happy S. is concerned with Careful S., who is still dealing with the death of his Adelian friend Kalo. Happy S. discovers that Careful S. has written a story in his journal where Kalo is the one who is dealing with Careful S. sacrificing himself.

## Characters

### Main characters

* Careful S.
* Kalo

### Supporting characters

* Happy S.
* Big M.
* Little M.

### Minor roles, cameos, etc.

* Sweet S.
* Smart S.
* Careless S.
* Doctor H.
* Huo Haha

## Description

### Title card

On a stone is etched a drawing of Careful S. solving his Rubik's Cube next to Kalo. The door the stone is on rotates, revealing another etching of the two helping an elderly lady. The door rotates again to show yet another etching, this time of the heroes fighting a monster. The frame pans out to show the whole door, which opens to reveal the episode title.

### Episode

Happy S. narrates over a flashback to March 21st, showing Kalo killing himself to save Planet Xing. The flashback ends and Careful S. wakes up shocked in his bed, revealing he was having a nightmare. Careful looks to his side and sees a picture of him and Kalo. Later, Happy S. still speaks over Careful S. helping people and defending the city, saying he's worried Careful wants the others to think he's fine and that he's worried about him since he's keeping his feelings in. Happy S. then warns the other Supermen not to talk about their friends when they're not here; Smart S. tells him he brought Careful S. into the room so that isn't a problem. Careful S. walks outside, still sadder than usual; Happy mentions Doctor H. said some people simply won't show how sad they are.

Later, Happy S. is playing soccer in the bedroom and accidentally makes the soccer ball bounce around. The ball hits a box and topples it over, causing a journal to fall out of it. Happy notices it as the wind blows it to a specific page; the Superman starts reading from there, discovering that according to the writings inside, on March 21st, Careful S. killed himself to save the Star Net and Kalo was repaired by Doctor H. Later, the Supermen realize Kalo is dejected in the same was as Careful, and Happy S. repeats what he said about people not always displaying their sadness and realizes he had said it before as Kalo walks outside, depressed.

A robber tries to bother an elderly lady, but Kalo comes in to defend her. Around a corner, Big M. orders Little M. to send out some monsters to finish off Kalo; the Adelian is ready to fight these foes and asks Careful S. to duplicate himself before realizing he's not there. This distraction allows the ribbon-twirling monster to trap Kalo, leading to the enemies all making their own moves on him. Kalo falls to the ground and drops Careful's Jixie Stone; seconds later, it appears Careful S. arrives in person to defeat the monsters, but when he comes to Careful to help him back up, he turns out to be Happy S., and Kalo gets up by himself and walks away with the Jixie Stone in his hand.

At the hospital, the doctor tells Kalo his hallucinations are because he refuses to believe Careful S. is dead, but that more importantly Kalo should take care of the robber trying to attack him. Kalo immediately does so and unties the doctor from the rope he was tangled in. Outside, Big M. says he knows how to deal with Kalo; later, Big M. pretends to be a fortune teller and informs Kalo that Careful S. never actually died and is instead trapped in a factory, waiting to be rescued. Big M. leaves and finds Little M., who worries Kalo may grow suspicious, but Big M. assures him he wouldn't ignore the chance if it involves Careful.

Kalo leaves for the factory and goes inside. Big M., who is again waiting outside with Little M., explains there is a system of bombs in the factory that will be set off if Kalo steps on one of the laser triggers. Kalo does end up stepping on a laser, causing him to be caught under debris produced by the explosions that follow. Kalo remembers Careful S. and his friendship and loyalty to him as he struggles to get back up, with Careful telling him not to give up causing him to stand back up and produce an explosion of his own, leading Big M. to believe he's done for. Kalo appears next to him and Little M. and knocks them into the sky.

The notebook's story ends here; Happy S. notes that this is the opposite of what actually happened, with Careful S. being the one who survived the Star Net incident. Careful S. himself is outside the house, looking at a picture of Kalo and telling it he'll finish the tasks Kalo was never able to complete. Happy S. approaches Careful S. and asks about what he wrote in the notebook, but does not get an answer. Happy realizes that Careful might be wishing he was the one sacrificed in the incident instead of Kalo; it starts to rain, and Careful S. starts to tear up before Happy S. produces an umbrella and has Careful come back inside with him.

## Trivia

### Series continuity

* The episode has Careful S. still dealing with the aftermath of Kalo's death in "God of War Legend (Part 4)" (S7E50).
* A few flashbacks to "The Cold Heroes (Part 2)" (S3E8), the second part of the episode that introduces Kalo, are seen.