Original: Figaro then arrives and hatches a plan to trick the Count : Susanna will give him a note indicating she wants to meet him that night in the garden ; Cherubino will be waiting there , dressed as a woman ; and the Countess will arrive and catch him red-handed .
Simplified: His plan is that Susanna will give him a note which says she wants to meet him that night in the garden ; Cherubino will be waiting there , dressed as a woman so that the Count thinks he is Susanna .