When does the Pokemon come to get Giratinas pla in spinda cafe sky?

It seems you're asking about a specific event in a game that doesn't exist.

There is no game called "Spinda Cafe Sky," and Giratina is a Pokemon, not a character in a cafe.

If you're looking for information about a real game, please clarify the game's name. Perhaps you're thinking of a different game or a fan-made creation.