Grandma shows Caillou how to make juice from scratch; Caillou's plans for a puppet-show are interrupted; Caillou and Grandpa collect rocks together. "A Sweet and Sour Day" - Caillou is on his way to his Grandma's house and he's very eager to get there. Mommy drops him off, saying she'll be back in a little while to pick him up. Grandma's busy with some gardening and Caillou volunteers to help her water her flowers. As he does so, he plays with his toy car as well. He imagines that he's driving a large water truck. He goes around the neighborhood, watering large plants. As he does, they sprout like magic and apples blossom before his very eyes. He even gives some kids a shower on a hot day. Back in real life, a cardinal bird appears at the bird bath. Caillou likes the bird, but is disappointed when it leaves almost right away. He asks Grandma why it left and she checks and sees that it's because the bird bath is empty. He offers to fill it up, but first he needs more water. He goes over to the hose, but the knob for the water falls off. He's worried that he broke it, but Grandma explains that it was already messed up and she's been meaning to fix it. Caillou fills the watering can, but finds that it's very heavy. He lugs it over to the bird bath anyway, but spills almost all of the water. So he uses one of his sandals to scoop it up and fills the bird bath. Grandma decides that it's snacktime. They go inside and Caillou finds that Grandma is out of juice. Grandma suggests that they can make their own. They gather up three different fruits --- two each of grapefruits, lemons and oranges. Caillou finds that both the grapefruits and the lemons are very sour. Grandma explains that the juice will taste better once they add a "secret ingredient," which turns out to be sugar. As they finish making the juice, Mommy arrives. Caillou offers her some and she quite likes it. "Caillou's Puppet Show" - Caillou is at playschool. He and his friends are doing crafts. He's decid (thetvdb.com)