This is a comical parody of bits of the beginning story set from Undertale and a couple situations that are after, but not to the "boss fight" against Toriel.
I'm sure we all want to know about her 401k.
This is to put more emphasis on comedy and the fetishes that follow after this. So the last picture with Toriel holding her phone up again, there is a couple pictures before it that I left out that I'll post separately. Instead of Frisk having to fight Toriel she tries other methods to get her to stay...which all backfire.