When her favorite niece Pamela announces she's marrying Mervin Tucker, Aunt Tillie is upset. Tillie's called to town and Mervin arrives suddenly. He's wired his Pal Ronald to meet him at Tillie's. Mervin drops off his suitcase and goes out to look for Ronald. Tillie mistakes the suitcase for her own and leaves town. Mervin goes swimming returning in a barrel as his clothes were stolen. Ronald hands him Tillie's suitcase and tells him to change. Luther Lorimer, Ronald's employer, calls at the house and Mervin appears in female attire. Ronald presents him as Tillie and the fun is on. Tillie returns. She's had an auto accident and her dress is ruined, so she has to wear one of Mervin's suits. Poor Pamela is completely confused.