The Big Bang Theory - Season 7eps24 -

: The university refuses to let Sheldon switch his field of study from string theory to inflationary cosmology.

: Raj progresses his relationship with Emily, finally finding romantic stability. The Big Bang Theory - Season 7Eps24

The finale revolves around being overwhelmed by several "combustions" of his status quo: : The university refuses to let Sheldon switch

: Leonard and Penny's engagement leads to talks of them moving in together, which Sheldon views as an abandonment of their roommate agreement. The Big Bang Theory - Season 7Eps24