There's a new paramedic in Holby. Calling himself Rossy, he works alone and is responding to all the shouts faster than Jeff and Dixie. Jeff likes the way Rossy is willing to go into potentially dangerous situations to get the job done. He seems too good to be true, and soon Dixie finds out he might be just that. Meanwhile, 30-year-old Tara is getting ready for a special meal with her boyfriend, Simon. She thinks he may ask to make their relationship a little more formal. But her younger sister, Gemma, is less than thrilled about the idea of them getting married. Does she know a secret about Simon? Elsewhere, Brendan's fiance Ali has found a message on his phone from a woman he has arranged to meet, and suspects him of having an affair. She goes to her best friend Stella for moral support, and together they plan to confront her boyfriend and the woman he is meeting