Best-Ever Sleepover

When five siblings accidentally schedule their best-ever sleepovers all on the same night, they are forced to combine into one chaotic party. Some friends want to scare each other with horror stories, some are planning a complex prank, and others have a secret mission to complete. Meanwhile, the five siblings are also carrying a big secret, which threatens to ruin everything. How can they have the best-ever sleepover with so much going on?