Does using Spark of light affect the story?

I am new to Destiny and I got a Spark of Light.

Will using it affect the story or will I be able to play through it, but at a higher level?

Solution 1:

It does not affect the story, it merely sets your level to 25. It does unlock The Taken King Story Missions and and equips the character with level appropriate gear. Since the level requirement for the other missions seems to be below level 25, all those missions will unlock as well.

Note: You do NOT gain 25 levels of experience. You will be a "fresh" level 25 player, meaning you cannot allocate points into skills or anything.