Bode plot in ideal OA circuit
First, always post a proper schematic when asking here.  That includes putting the component values right by each part.  It's really annoying to have to look back and forth between the drawing and the chart.  It makes it difficult to "see" what is going on quickly.

You may have gotten the schematic this way, but that's not our problem and no excuse.  You are responsible for what you post here, no matter what someone else gives you.

As for the Bode plot, note that overall there is a high pass filter with one pole and one zero.  This comes from the interaction between C and R6.  At low frequencies C is open and there is only R6.  At high frequencies, R6 is shorted by C.  R6 being "shorted" is relative to R7.

You should be able to find the high and low frequency gains by inspection.  The rolloff frequencies then come from the interactions of C with R6 and R7.