After the demolition of Riley's mind headquarters, the new Emotions – Anxiety, Calm, Excitement, and Gratitude – struggle to find their place and navigate their new roles in Riley's mind. They must work together to help Riley navigate the challenges of her teenage years, including friendships, family dynamics, and the pressures of school and growing up.
As the new Emotions settle into their roles, they encounter unexpected challenges and conflicts as they try to maintain a balance and harmony within Riley's mind. Anxiety, in particular, becomes a central figure as she constantly worries about the future and the unknown, often causing tension and discord among the other Emotions.
Meanwhile, Joy, Sadness, Anger, Fear, and Disgust find themselves in a new role as mentors, guiding and advising the new Emotions as they face their own struggles and uncertainties. Through their interactions and experiences, they all learn the importance of embracing and understanding each other's emotions, and the importance of balance in Riley's mind.
As Riley's life takes unexpected turns, the Emotions must learn to adapt and support her through the ups and downs, ultimately finding that their collective strength and efforts are what help Riley navigate the challenges of growing up. The movie delves into the complexities of emotions and the importance of embracing and understanding all of them in order to achieve balance and well-being.