This story is a sequel to My Little Background Pony: New Neighbors
Read the first story here.
Time Turner's been working on the TARDIS for a long time now. But after his latest repair job ends in near tragedy for him and Derpy, he starts feeling depressed. Derpy, being the good friend and bringer of happiness that she is, decides to throw Turner a surprise party to cheer him up. But can she, and the rest of their friends, keep it a surprise for long? And even if they do, will it be enough to bring Turner out of his sad state?
Extra character tag: Bon Bon (seriously, why can't we have six tags?)