Cheryl and Polly decide to attend the Homecoming in Jason's honor, until a revelation waylays their plans; Alice turns to Archie and Veronica for help.

Cast: K.J. Apa, Lili Reinhart, Camila Mendes, Cole Sprouse, Marisol Nichols, Madelaine Petsch, Casey Cott, Ashleigh Murray, Mädchen Amick, Luke Perry, Asha Bromfield, Ross Butler, Hayley Law, Lochlyn Munro, Rob Raco