All the hurt and anger that Bay (Vanessa Marano) feels for Emmett (Sean Berdy) comes blasting in full force in the upcoming episode of ABC's teen/family drama series "Switched at Birth."

In "Instead of Damning the Darkness, it's Better to Light a Little Lantern," Cartermatt reports that Bay's fury at her ex-boyfriend will get the better of her during a trip in Mexico with Daphne (Katie Leclerc) and Travis (Ryan Lane). The three decide to celebrate spring break by assisting Melody (Marlee Matlin) in her volunteer work in rural Mexico.

Once there, however, things go downhill for Daphne and Bay. Daphne will meet a fellow volunteer that will somehow upset her, while Bay will learn something about her ex-boyfriend that will resurrect all the hate she feels over their break up. What will she discover that will make her lose her cool like that?

Meanwhile, if things are turning sour for the younger people, Melody will get a pleasant surprise from her boyfriend. The website reveals that it will be a life-changing idea for the volunteer worker. Does this involve a break in her career or in her personal life?

Last episode, Regina (Constance Marie) decided to move out of the Kennish's guest house and live with Eric (Terrell Tilford). She finally felt at peace with her decision after discovering why her boyfriend had taken Will (Sayeed Shahidi) away from his mother. Eric's former wife was and continues to be a drug addict, and is certainly not a good influence to their son.

While Daphne was in full support of her mother's decision, Bay was not. She could not believe that Regina would keep her leaving the house a secret from her. Bay felt that she and Eric had only known each other for such a short time and it would be prudent to think it over first. The fact that Regina missed their celebration of Angelo's birthday irked her, especially after learning that the former went to Will's recital instead. In the end, however, all was forgiven and they were able to get together for Angelo's memory.

"Switched at Birth" airs Mondays at 8 p.m. EST on ABC Family.