Helping a carpenter left to care for his handicapped younger brother after the death of their parents is Salih’s challenge in this week’s episode of “Fifth Dimension.” Joining the staff as the new music teacher at the little boy’s school, he directs the students as they prepare for a production to honor the birthday of the Prophet Mohammed. But things take a turn for the worse when tragedy strikes and the little boy’s best friend becomes hospitalized leaving him alone with his coldhearted brother. It’s up to Salih to repair the relationship between the two siblings and to teach the little boy that, in God’s great plan, no one is really ever alone. Love and friendship are the themes of this week’s touching “Fifth Dimension.”