So the queen -Toriel- wasn't so successful at "protecting" fallen ones.6 human has fallen down and their souls has been taken by Asgore.But their death reasons are unknown.The last child apparently a kid named "Frisk"(now keep that in mind).(I have no idea of his/her gender I am just gonna assume that it is a boy)He lands on golden flowers.And gets up after a short walk a flower appears and says:
-Howdy,I am flowey ,flowey the flower.You are new to the underground aren'tcha?
And then begins to tell him how things work.At some point Flowey attempts to kill the child saying "You idiot,in this world it is kill or be killed".But Toriel saves the child and brings him to his home. Toriel seemed happy with it until kid started asking "how can I go to home".