A trip to the aquarium leads to trouble when an employee is pulled into a whirlpool. Sakura and Kero suspect the Water Card is behind the incident. Sakura must use her strongest allies to capture this feisty card.
A new student arrives at Sakura's school. He also happens to know about the Clow Cards and insists she give the cards to him. The two confront the Thunder Card together, further driving a wedge between them.
Sakura ruminates on her encounter with Li and the Thunder Card. Later, they clash as the Sword Card appears--and takes control of Rita. Can they release Rita from the card's power without hurting her?
Sakura finds herself performing the same music test three days in a row as the Time Card makes its appearance, causing the day to repeat itself. After many failed attempts, the trio are able to overcome this tricky Clow Card.
A trip to the zoo proves eventful when the Power Card shows its abilities. With the help of elephants in a game of tug-of-war, Sakura takes on this tough Clow Card.
An environmental studies field trip to the beach proves frightening when students begin disappearing while on an ancient shrine walk. Sakura and Li track down the Erase Card that's haunting a cave where their classmates vanished.
Much to his dismay, Li's childhood friend, Meilin Rae, moves to Readington. To prove that she too can capture cards, despite having no magical lineage, she takes on the Fight Card.
Chaos ensues when a young girl appearing to be Sakura's double runs amok in Readington. To make matters worse, her doppelganger harms Tori. It's up to Sakura to save her brother. She also learns a new way to use the Clow Cards.
With the arrival of a new teacher, Ms. MacKenzie, so too appears another Clow Card--the Maze Card. It shifts and moves people around, and magic is no use against it. With the help of Ms. MacKenzie, Sakura, Li, Madison, and Meilin escape.
When Twin Bells receives a shipment of magic cards that resemble Clow Cards, Sakura makes a disturbing discovery: one of the cards was a true Clow Card. Can she track it down before its buyer gets hurt?
While trying to capture the Dash Card, it escapes and is taken in by a Jessie, a classmate of Sakura. When Sakura learns of the bond between Dash and Jessie, she refuses to capture the card. It's up to Li to ensure its capture.
When Nikki finds an storybook in which she can add to the story, her imaginings come to life. While trying to track down the card, Sakura and company stumble upon another card. It comes to Sakura's aid when she needs it most.
While capturing the Switch Card, Kero and Li swap bodies. They have to stay in each other's form for 24 hours before they can be reunited with their correct bodies. The trick? Not letting on that they aren't who they appear to be.
A class trip to the ice rink goes awry when the Freeze Card lowers the arena temperature and everything begins turning to ice. Sakura and Li work together to capture the escaped card before everyone freezes.
Sakura begins to suspect who the figure in her dream is and wants to prove herself as she grows as a Cardcaptor. While planning to talk to Li, the Firey Card springs up at the winter carnival.
The start of the new school year sees the return of Ms. MacKenzie as the grade 5 teacher for Sakura's class. With her return comes the Snow Card, covering the town in a thick layer of snow.
Meilin plans to return home and is disappointed to learn that Li feels she didn't help him with capturing the Clow Cards. When the Twin Card shows up, Meilin learns her true value.