Question: plot Imaginary part

I have the following equation:

.9215999996*z^4+.9999999996*z^4*s^4-2.079999999*z^4*s^2-3.212799999*s*z^3+12.63999999*s^3*z^3-7.999999997*s^5*z^3-24.17694443*s^4*z^2-.3071555554*s^2*z^2+23.99999999*s^6*z^2-31.99999999*s^7*z+6.804911108*s^3*z+11.58777777*s^5*z+15.99999999*s^8+5.692222220*s^6-4.853219442*s^4=0

where s is real and z is complex.

 

How do I plot the graph Im(z) versus s?

 

Thank you very much for your help!

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