The Clear Card arc begins with Sakura Kinomoto starting middle school and reuniting with Syaoran Li, who has returned from Hong Kong. However, after Sakura has a strange dream involving a mysterious hooded figure, she wakes up to discover that her magical cards are now blank and no longer work. The following night, Sakura has another dream where she is gifted a key from the hooded figure; a key which summons a new sealing wand and allows Sakura to collect new cards.
The 30-second promo gives us a glimpse of Sakura at middle school, as well encountering a mysterious figure in her dreams and receiving a new wand.
From animation studio Madhouse, Cardcaptor Sakura: Clear Card will air in Japan on NHK BS Premium at 7:30am on Sunday 7 January 2018.