It is rude to miss a special celebration.
It is Luke's fathers birthday and his family is holding a large celebration at Luke's house for his father.
Luke wants to stay home that day instead of going out.
Luke joins the celebration in the main celebration areas.
Luke avoids the rooms in the house that contain celebration.
Luke's family welcomes him and has a good time with him, appreciating his presence.
Luke is seen as the black sheep in the family for not attending his Dad's birthday.