What is A Raisin in the Sun about?Please don't give away the ending!

This play, by black, female playwright Lorraine Hansberry,
tells the story of the Younger family who are all trying to achieve their individual
dreams, and in the process find out what is really important to each one of
them.

The play opens on a the only setting of the play --
the Younger family apartment where Mama Younger, her son Walter and his wife and son
live, along with Walter's sister Beneatha.  Mama has just received the life insurance
check after Big Walter's death, and she tells that family that it is her dream to own a
real house for the family.  Along with that dream, she also intends to pay for
Beneatha's college education.  Walter has other dreams though.  The play focuses on
Walter and his maturation through he experiences in the play.  He begs his mother for a
portion of the money so that he can start his own business and have something to call
his own.  He wants to start of liquor store, which Mama doesn't approve of.  Mama
eventually relents and gives a portion of the money to Walter, but he ends up making a
bad decision which jeopardizes all of the family's dreams.  The play is about ultimately
about Walter coming to a clear understanding of what being a man is truly about.  The
play uses Beneatha as a foil to Walter.  She is someone who wants to embrace her Black
heritage and better discover that aspect of where she comes from, while also taking
advantage of the opportunities for self-improvement through education that are available
to her.  The play looks at all sides of the metaphorical question:  What happens to a
raisin in the sun? -- which is an allusion to a poem by the same name, written by
Langston Hughes.