Lucy, Ricky, Fred, and Ethel are visiting San Diego. While Ricky rehearses a show with Maurice Chevalier, Lucy and Ethel cross the Mexican border to do a little shopping. Returning to the US, a stowaway boy is found in the Ricardo's car trunk by US Customes. With Lucy and Ethel in jail, Ricky, Fred, and Maurice come to the rescue. Unfortunately, now Chevalier is being held because he is not authorized to leave the US into Mexico. This sends Lucy off to a bullfight to find the American consul, only Lucy disguises herself as a matador, and ends up facing a raging bull.
