When their bond loses the immediate context of volleyball, they're left to consider why it's still so vital and important.
Meeting again, by chance, six years later.
Derek isn't an uptight person - seriously, for an alpha, he's downright laid-back - but something about Stilinski makes him want to bare his teeth and grasp him by the scruff and bite.
No, not bite. That would be incredibly inappropriate, of course - and Derek plus the legal department are aware of that. Anyway, the point is, Stilinski needs to be kept in line.
Or, wherein Derek's office rival might be the same person keeping him sane at night when the loneliness hits.