after Kris and Susie fell down a long hole, soon they woke up on some golden flowers, they see a random child thats been there for like, idk, 2 weeks? they look around confused.

"susie: GOD DAMNIT KRIS WHERE THE HELL ARE WE"

Kris is just stands there, staring at susie also confused on where tf they are, they then continue and see a golden flower, but the thing is, its alive?

"flowey: howdy! im flowey. flowey the flower! you're new to the underground, aren'tcha? golly, you must be so confused. well, someone ought to teach you how things work here! guess a lil' old me will have to do. ready?"

both of them turn into small red hearts, they can both move, they are both trapped in a white box.