When Mia's little brother comes in town wanting her to sing part of his band for a talent show, she is disappointed as she believes he is abandoning his studies. She later realizes that he was doing it for charity part of a children's hospital and she then joins Antonio and her brother in a song. She first uses Super Mode against Serrator but the villain she has most battles with is Dayu. Because of a Nighlok who made people enter their dreams, Mia was swept into Dayu's dream space and experiences her past. Mia is conflicted in feeling sorry for Dayu but her current evil actions has Mia realize she must fight her. She first met Dayu when Dayu was kidnapping brides to make a dress out of their sadness.
Eventually Dayu was destroyed by Xandred and he used part of her humanity to shield himself from the sealing symbol. Mia took great offense from this. When fighting the Duplicator, Mia was able to access Shogun Mode, being the first Ranger other than Jayden to do so and the first female in Power Ranger history to have a final heavy armor form. When the Rangers were stuck on the island of Monalua, Mia wanted Jayden to trust in her and his friends when conflicted about Deker. After the Rangers defeated the Nighlok, Mia was on her way to Culinary Academy much to Mike's relief.