Jack is horrified when he accidentally tears a spider web, so decides to make the poor little spider a replacement. But making a web is trickier – and stickier? than Jack had thought and results in the aliens and all the garden furniture stuck in a giant sticky web ball. Forced to shrink down so Dad doesn’t see them, the aliens have to find a way to get out of their predicament before the original spider makes a meal of them in its new web.