The Batts family has arrived at a hotel in Los Angeles and everything is all set for Aunt Laura’s wedding weekend. Stella and Penny are going to be getting a new uncle, and a new cousin! Plus, they get to be flower girls, and wear fancy dresses, and walk down the aisle throwing rose petals. It’s going to be perfect–just the way Aunt Laura has imagined it. Just the way Stella has imagined it, too. But sometimes a wedding doesn’t happen the way anyone thinks it will–including the bride. Things are starting to go wrong, and Stella is worried that it’s all her fault!