De Li builds a sandcastle but Nok Tok accidentally falls on top of it and the castle is destroyed. Nok Tok vows to make her another. It will be the biggest sand castle ever! He enlists the help of Lau Lau and Yojojo. De Li wants to help too, but Nok Tok explains as the sand castle is for De Li, she must let the others make it for her. Even the cheebies help, but De Li is disappointed. She loves making sandcastles. So the cheebies ask Nok Tok if De Li can join in, but it is too late! The sandcastle is finished. Or so Nok Tok thinks. De Li decides it's not finished until it's decorated. So together with the cheebies she does just that! Now it is the biggest sandcastle and the most beautiful.