After the great triumph over Lanka, Ram returns to Ayodhya sitting in Pushpak viman. He was accompanied by Sita, Laxman, Sugriva, Hanuman and scores of monkey warriors. As the 14 years of exile was about to come to an end, people of Ayodhya awaited for the arrival of their future King with belated breath. Hanumanji became the messenger and pass on the good news that Ram is approaching Ayodhya. People of Ayodhya lined up on both sides of the street to have a glimpse of Sri Ram. Kul-Guru (head priest) Vashishta, Bharat, Shatrughna, and three motheres welcomed them. A grand reception marked the return of Ram, Sita and Laxman to Ayodhya along with monkey soldiers. Commemorating this great event, Diwali - the festival of lights is celebrated every year by Hindus.
Vashishta then performed ceremonial rituals of crowning Ram as King of Ayodhya. Six months passed this way. All monkeys, in pink of their happiness, forgot their worldly duties. Sri Ram reminded them of their roles. With heavy heart, one by one, everybody departed from Ayodhya. Rama ruled over Ayodhya with great morality and justice, making his people happy and prosperous in every possible way and thus set an example of ideal kingdom as 'Ram-Rajya'. In due course of time Sita gave birth to two sons named Lava and Kush.
The last chapter of Ramcharitmanas is called Uttar Kand, which means that it's actually not part of Ramayan, or in true sense, the story about life and works of Lord Ram. Uttar Kand mostly contains Lord Shiva and Parvati's life, Kagbhsundi's life and tale of his many previous births.
Ramayana thus depicts an idol for ordinary human beings. Lord Ram symbolizes truth and justice, Sita symbolizes compassion and patience, Laxman symbolizes sacrifice and service while Hanuman symbolizes devotion, wisdom and energy. Each character of Ramayana is unique and gives inspiring message on morals and values to be followed in our day to day life. That's why the popularity of this epic has not diminished with the passage of time but on the contrary is ever increasing with time. Ramayana today is not confined only as the epic of Hindus but have major effect on other countries and religions.
In the end, it would be justified to say that the message of Ramayana is that truth always prevails and righteousness ultimately wins.