Sakura is super-hyped about a Sunday picnic with Tomoyo, but that particular bubble is burst when Touya reminds her that she has to do all of the house chores on Sunday, as a result of switching days with him earlier. Still, after calling to postpone (and Tomoyo’s sumptuous basket lunch is already prepared, *sniff*!) Sakura rolls her sleeves up and gets to it, briefly transforming into Housecleaner Sakura and enlisting Kero for laundry duty.
While she first discovered the Clow Cards in the basement, up until this point none had started anything in her house. That changes when in the process of cleaning she finds not one but two cards, one of them smudged with ink. When her dad calls her to come to the bus stop to bring him a file he forgot, she leaves the cards alone briefly without writing her name on them, but that’s long enough for the woody mischief to begin!
After hearing ominous groaning sounds, Sakura opens the basement door to find a gigantic tree has sprouted. She releases her staff and seals the card, but it soon returns with a vengeance, since the card itself is still in the basement with a second card. As Tomoyo arrives to help (but mostly to dress Sakura up and film her) the tree re-sprouts with a vengeance, threatening to destroy the house…something Sakura can’t allow to happen.
Donning a super-cool pink pop costume complete with winged headband and moon boots, Sakura braves the labyrinth of branches until she reaches the basement and locates the source of all the trouble. According to Kero-chan, The Wood is a very gentle card, but the second card, Rainy, is basically The Wood’s rowdy enabling friend, raining on the tree and spurring its growth. In order to calm The Wood down, Rainy must be dealt with.
Sakura ends up fighting water with water, summoning Watery to create a feedback loop of water and rain and eventually restraining and sealing the mischievous Rainy. With the catalyst for growth gone, Kero urges patience, and after a moment the branches withdraw, leaving the structure house rather implausibly intact (though Kero said it was gentle; in this case extremely so!)
Still, the aftermath leaves the house a horrendous mess, but have no fear: Tomoyo volunteers to help Sakura and Kero set everything right, and by the time Touya and her dad come home the place is sparkling once more. The first of likely many “stay-at-home” episodes, we got a glimpse of life in the Kinomoto residence, where every family member in. We also witness Kero-chan’s lifeless “Plushie Mode” for the first time!