The duration of Susan's Plan is 1.48 hours.
3
The Blackeyed Susans was created in 1989.
Band of Susans ended in 1996.
Band of Susans was created in 1986.
The duration of Family Plan is 2 hours.
The duration of The Counterfeit Plan is 1.33 hours.
The duration of Man with a Plan is 1.48 hours.
The duration of Plan for Destruction is 1320.0 seconds.
The plural form for the proper noun Susan is Susans; the plural possessive form is Susans'.
The duration of A Simple Plan - film - is 2.02 hours.
The duration of The Back-up Plan is 1.73 hours.
If you're talking about something belonging to Susan, the phrase is "This is Susan's"