Sakura wins a trip to Hong Kong during spring break. She soon discovers that her luck isn't what won her this trip, but that of dark, vengeful magic.
This movie feels very much like the TV series does and fits in quite well. The film begins with Sakura capturing the Arrow Card. When she gets to Hong Kong, we get to meet Li's family, and most importantly his mother. This was my favorite part of the film, and I wish she got some more screen time. The dark magic that brought Sakura to Hong Kong gives us a peek into Clow Reed's past, however, the film's story is too straightforward and how the issue is resolved isn't all that original or climactic.
The animation looks decent, but aside from a few scenes, it doesn't look much better than the TV series which is pretty disappointing. The TV series is well animated though, even by today's standards, so it's not that this movie looks cheap, but it's not what I would necessarily expect from a theatrical animation. On the plus side, I love the ending theme song.
If you enjoy Cardcaptor Sakura then you should watch and will enjoy this film, simple as that.