The video shows Katy Perry singing and sparks flying from her chest that correspond to the lyrics and intensity of her singing. It cuts between her performance and three other storylines - an unhappy family, a boy with cancer, and someone lacking originality - to illustrate different people being inspired. As the song builds, the sparks appear in the chests of the other people as well, showing how Katy's message of empowerment spreads. The video concludes with a colorful sky, representing the journey it took the audience on from a plain beginning to a bright ending.