When writing dramatic stories, you will have a primary character that the story centers around, as well as secondary characters with some being more important than others.
You truly want the reader to care about what happens to your primary character, so it is vital to endear him (her) somehow. Then when something terrible happens, your readers will empathize easily with this character. But how do you do that?
Rather than giving a physical description and information on how the character feels about things, this type of information can be filtered through conversations, as well as by how this character acts and reacts to various people and events. This may seem difficult at first, but it can be done with practice and is a sign of an experienced writer.
Drama also involves a good plot line with some twists and turns, so make sure that you plan this ahead of time. The reader wants to expect the unexpected.