Sakura, actually........

Flashback..

When everyone is running from school sakura saw something shiny in mr. Moon's hand so sakura tried to see from window to principal office. And she saw Kim moon is taking to someone and said

Kim moon, because of this necklace they came here, never and ever this necklace will be lost

Before she understand something he  saw her and he called her in the office because she is very clever. She came in and and taked the necklace and ran away from school. But he said to his guards

Kim moon, go behind her and catch her

Flashback end..

But all maknaes are playing outside in rain and dancing on this song

*Badal barsa bijuli*

Maknaes are ignoring all these things infact they are liking this place and

But they goes to a lab which they seen from outside of the home and don't tell them

Inside the lab

Eunchae, wowowowowo, let's mix this chemicals

Lisa, but first wear gloves, coat and some other things which is important

Kai, she is saying true

After wearing all this things

Jk, let's start mixing

And they started mixing chemicals because all are weak in chemistry they don't know what to do

And boom

They somehow survive and came home in a worn out state.

In home

Maknaes, When we were mixing chemicals, there was an explosion, we came out of there, but a security guard fell on the chemical and we turned into zombies.

They all got shocked after listening

Then they hear knocking sound from door