Timmy reads a letter from his mail, excited that his twin sister, Timantha is moving in with him. After her arrival, Timmy asked a request for his sister, letting her tell him everything she knows about girl stuff so that Timmy could win Trixie's heart. Successfully doing just that, Timmy became more scheduled on Trixie's plans after he won her over. However, Timmy noticed he barely spent any time with his sister. Upset, Timantha left a letter to Timmy, telling him she's moving out. Because of Timmy's behavior, Cosmo, Wanda and Poof leave Timmy and are assigned to be Timantha's fairy godparents. It's up for Timmy to fix what he's done wrong and get his "five minutes younger" sister and his fairy godparents back.