Riley get bad hair day by using Smackle shampoo that she brought so Maya, Topanga and Smackle helping to fixing Riley hair. Meanwhile, Auggie ask Lucas, Farkle and Zay for helping and enter in race car competition.
- Rowan Blanchard as Riley Matthews
- Sabrina Carpenter as Maya Hart
- Ben Savage as Cory Matthews
- Danielle Fishel as Topanga Matthews
- August Masturo as Auggie Matthews
- Peyton Meyer as Lucas Friar
- Corey Fogelmanis as Farkle Minkus
- Cecilia Balagot as Isadora Smackle
- Amir Mitchell–Townes as Zay Babineaux
- This episode also called as Girl Meets Hair and Car.