Tonton Streaming Dragon Tales (1999) S1E3 - To Kingdom Come

Ord's selfishness by refusing to share anything with his friends at a beach party, especially a "wishing shell" he finds, sends him and then everyone else to a strange and unfamiliar land called “Kingdom Come” with no way home, since the owner, Mounsieur Marmadune, also refuses to share the key with them to let them out. However, Ord later learns that sharing with friends can make any wish come true.