Floor Seven had no walls. That was the first thing Julian noticed. He stepped off the staircase onto what felt like solid ground, but there was nothing around them. Just empty gray space stretching in every direction. No ceiling. No floor besides the invisible surface under his boots. "Where are we?" Pip whispered. "I don't know." "That's not reassuring." "I'm aware." Dara took a step forward. A ripple spread out from her foot like she'd dropped a stone in still water. The ripple hit something invisible about twenty meters away and bounced back. "We're in a bubble," she said. "A small one." The journal buzzed. FLOOR SEVEN - THE MEMORY VAULT. NATURE: REFLECTIVE. OBJECTIVE: REACH THE CENTER. RULES: THIS FLOOR SHOWS YOU WHAT YOU'VE FORGOTTEN. Julian read it aloud. "I haven't for

