Sundarakanda is a part of Ramayana. This is a "free" reveling in the story.
What I mean by "free Reveling" is, I do not intend to re tell the story. Many people have already done it. What I am doing is essentially meditating on Lord Hanuman. The objective is to "Feel" the supreme State of Bhakti of Hanuman.
If we read Adhyatma Ramayana, we shall discover that Hanuman knew pretty clearly what was going to happen. Infact, even Shabari knew it all. When Rama goes to Shabari, he asks her "can you tell me where Sita is?" , Shabari should have smiled at it.
She said "Lord, you know it all and yet you desire to hear from me. So let me tell you. She is taken away by Ravana. You shall meet Sugriva who shall help you in getting back Sita by going in this direction ..."
She knew it all! Before even it happened.
Its not as if Rama did not know what was going to happen. He is God himself. There was nothing unknown to him. Knowing everything and knowing his own true nature very well, he was just playing his role in the movie called Ramayana
-- if i may be allowed to call it a movie.
Again, it was not as if Hanuman did not know it all! Hanuman, being none other than Siva, knew it all. But he was playing his role. Through his role he illustrated to us how a bhakta should live in this world.