Cardcaptor Sakura

So Sakura is taking yet another field trip from school to go strawberry picking. When they are about to start it turns out Yukito and Touya are there working as well. Kero is left at home though, and is expecting Sakura to bring him a souvenior. After Sakura shares a moment with Yukito, the material warehouse door won't open. When Sakura, Tomoyo, Syaoran, and Meiling go in to investigate, the door shuts behind them. They are locked in. Ms. Mizuki appears in the window to tell Sakura what to do, and Sakura manages to unlock the door and seal the Lock card. In the end Sakura also forgets to bring Kero something to eat.