Blue Diner is a story of a Puerto Rican mother Meche (Miriam Colon) and daughter Elena (Lisa Vidal) living together in Boston and difficulties they face when Elena mysteriously loses her ability to speak Spanish, he first language. As Elena's language disappears, he boyfriend's (Jose Yenque) painting inexplicably appears at the museum where her mother Meche works.

Miriam Colon
Meche

Lisa Vidal
Elena

Jose Yenque
Tito

William Marquez
Papo
Virginia Rambal
Vika

Jack Mulcahy
Brian

Jamie Tirelli
Hector

Fidel Vicioso
Patricio
Edouard DeSoto
Singer at Club

Gustave Johnson
Security Guard

Teresa Yenque
Dog casket shopper
René Sánchez
Don Benito
Chuck Brinig
Theo

Ken Cheeseman
Banker

Lonnie Farmer
Lawyer