in the forest, the sylph and james dally romantically. the sylph summons her sister sylphs. they entertain james with several dances. he wants to capture the sylph, and asks old madge for her help. she gives him a poisoned scarf, but tells him he can capture the sylph with it. he wraps the sylph in the scarf. her wings fall off and she dies. james sees a wedding procession led by gurn and effie. he faints and dies. old madge has had her revenge.