Set at the exact same time as "Summertime Road Trip" and "Riff's Silver Strike", but NOT based on any segments of the Tiny Toons' summer vacation special. Apple Bloom gets a summer job helping Zecora make and test her potions as well as build and reinforce shelves for the bottles for said potions. Now, Apple Bloom knows Zecora has no money to pay her, but it IS a good way to help a friend AND keep in practice for a tinkerer's competition (as in a friendly competition for sentient beings who happen to be good with tools) at the end of the summer.