The sparticle Mystery The dissaperence

When a group of children return to the surface of a day out trip they won, every single person over 15 has disappeared. Meanwhile Kat and her mum and sister argue. She turns around and find out they went. The kids in the cave; Ami, Sadiq, Reese, Jordan and Callum all go in a car to see what is going on but whilst going to the poice station, Callum decides to leave. Sadiq calls for him and Callum almost hits Sadiq with a brick on purpose. They leave the car and enter a supermarket at Ami's request. Kat finds her nextdoor neighbour, Liam, being trapped in his room because his mother grounded him for 5 minutes. She lets him out and they find an ice-cream van. When she gives Liam and ice-cream, they head to the supermarket. Just before Sadiq puts his hand in the till, Kat appears and confronts him.