After Rainbow Dash returns home after a long day of flying, she discovers something unpredictable. Something she never would've guessed. Something nopony would've guessed, more like.

It has to do with Tank...

...and the fact that he's a shedding tortoise!

How will Rainbow Dash deal with all of the tortoise skin all over her house? Will Tank start shedding more of his skin? Only the act of science can deal with this...

Idea given to me by Tennis Match Fan