Lishy first needs lemon, so after a fruitless search through her cabinets, the traveling salesman Alistair hears her call for help and literally pops up. He sells her a magical elixir that, when sprayed, will produce all the lemons she needs. But Lishy sprays too much and lemons fill the treehouse! As Lishy tries to hide the lemons from Lucky, as she wants to prove she can do this on her own, her cousin, Time Traveling Tina, stops by to say hello. Tina is about to go visit Ancient Egypt and gives a few facts about the time period and culture! She says goodbye to Lishy and Lucky then goes back into her time machine, which is part of the treehouse. Lucky leaves again to continue work on the song and Lishy now searches for a lemonade recipe! She finds her grandmother's recipe book and finds a recipe. However, while doing so, an errant lemon rolls out of the treehouse and hits their friend Milt, who was passing by! Milt comes up to complain, but ends up agreeing to help Lishy build the physical lemonade stand, because he'll get his favorite thing in the world - eggs and bacon. Lishy and Milt build the lemonade stand and crush the lemons with the lemonader 300. But when Milt asks about the eggs and bacon, Lishy is sad to tell him that she won't have time to make it! Milt is angry! So when Lucky comes out to show Lishy the latest with the 'Lemonade Stand' song, Milt decides he's going to ruin the lemonade by switching the sugar with salt! Lishy has no idea as he mixes it in. Lishy and Milt take a nap, so Lucky sneaks in to test the lemonade. It's awful! Pockets, another treehouse friend, is there trying to play a prank on Lucky, but he accidentally leads Lucky to Milt's backpack that has the stolen sugar container! Lucky has figured it out and will make things right. Lishy and Milt wake up and open the lemonade stand for business. Time Traveling Tina & Alistair return and try the lemonade - it's great! Milt's confused, because it was supposed to be salty! He reveals he tried to sabotage the lemonade, not realizing Lucky fixed it while they were asleep. Lishy reveals that Milt had no reason to be angry - she was going to make him eggs and bacon tomorrow! Milt feels bad but is forgiven. Lucky finishes the 'LEMONADE STAND' song and plays it for everyone.