I've been watching for several weeks. The show is *long*, so I usually fast forward through the talking (which I don't understand, anyway).
The premise is that each non-celebrity is paired with a celebrity. The winning couple in the end will have a dream (un sueno) granted. One guy -- who I think got eliminated last week -- was dancing to raise money for a drug rehab program. My favorite dancer, Betzy, is dancing to raise money to build a house for her brothers and sisters to live in because her parents are divorced or something. One of the others wants to raise money to get his brother an artifical leg. Yet another works with kids with Down's Syndrome and other handicaps, and wants to put an elevator in his house.
It's pretty tear jerking...there's this whole ceremony where the couple who is getting kicked out has to extinguish their big candle.