Is there anything i can due after being set up by my 2 managers and my accusser?

Dated a girl at work her husband found out , that monday they were at my work claiming harassment,(false)as info came out after i was fired seems that my plant and district manager knew 10 days ahead of time we were having issues but instead did nothing , except work with the girl to set me up.they also lied and tried to cover it up but i have it on paper sounds unreal but it is true , had they stepped in all would be good now my job is gone and my named ruined i was there e11 year, so one even wanted to hear what i had to say and now i know why .i'm interested in my bosses actions because it is wrong and i think illegal.because if they are allowed to set you up then i should move to a different country.need help.its a bigger story then a 100 words