Theory:

     So he crept downstairs and opened the front door quite softly, and went out into the garden. But when the children saw him they were so frightened that they all ran away, and the garden became winter again. Only the little boy did not run, for his eyes were so full of tears that he did not see the Giant coming. And the Giant stole up behind him and took him gently in his hands, and put him up into the tree. And the tree broke at once into blossom, and the birds came and sang on it, and the little boy stretched out his two arms and flung them round the Giant’s neck, and kissed him. And the other children, when they saw that the Giant was not wicked any longer, came running back, and with them came the Spring. “It is your garden now, little children,” said the Giant, and he took a great axe and knocked down the wall. And when the people were going to market at twelve o’clock they found the Giant playing with the children in the most beautiful garden they had ever seen.
Explanation:
 
The giant silently entered the garden from his castle, opened the front door, and stepped out into the garden. However, children noticed him. They were scared to see the giant as they already had a bad experience on being chased and shouted at by him. They were reminded of that incident and ran away from that place. Surprisingly, spring went behind them, and winter occupied the giant's garden again.
 
To his surprise, the little boy who was trying to climb up the tree did not run along with them. The little boy's eyes were filled with tears that prevented him from seeing the giant. The giant had mercy on the little boy and went behind him, secretly thinking to help the boy. He went behind the little boy secretly and dropped him on the tree. Suddenly, a miracle happened. The moment he had dropped the little boy on the tree, it started to blossom; beautiful little birds came back to the garden, chirping around. The little boy was overwhelmed with the giant's help. Sitting on the branch of the tree, he extended his cute little hands toward the giant, flinging them around his neck. He was not as scared of the giant as other children. He kissed the giant to show his love as the giant helped him sit on the tree branch.
 
The lovable giant.jpg
The lovable giant
 
The other children who made their way to escape from the garden looked back and were stunned to see the incident.
 
They were delighted to see the giant allowing the little kid to sit and play on the tree. And when the children understood that the giant was not wicked anymore, they returned to the garden.
 
Children's joy upon the giant's change.jpg
The children's return
 
Again, the miracle happened. With the children, the spring came back to the giant's garden once again.
 
The giant happily spoke to the kids. Then, he announced to them, "It is your garden now, little children". Earlier, he shouted at the kids saying, "My garden is my own garden". Now he understood his mistake and took a step to restore his mistake. Also, he took a great axe and broke the garden wall which he constructed earlier.
 
Around noon, when people were going to market, they were exceedingly amazed by the sight of the giant playing with kids in his garden. It seemed to be a pleasant sight in that most beautiful garden.
 
Meaning of difficult words:
 
S.No
Words
Meaning
 1.
Crept To move quietly without being noticed by others
2.
StoleTo move somewhere secretly without being noticed
3.
MiracleAn event that is believed to be caused by God
4.
BlossomA flower
5.
FlungTo move yourself suddenly with a lot of force
6.
WickedMorally bad
Reference:
National Council of Educational Research and Training (2008). The Selfish Giant – Oscar Wilde (pp. 17-24). Published at the Publication Division by the Secretary, National Council of Educational Research and Training, Sri Aurobindo Marg, New Delhi.