diff --git a/web/js/boot.js b/web/js/boot.js
index 27680ce..aeb8c32 100644
--- a/web/js/boot.js
+++ b/web/js/boot.js
@@ -133,6 +133,22 @@ bus.on('level:event', (ev) => {
     });
   }
 });
+// CONTINUE on the medal card -> load the next segment. cards.js raises ui:continue with C's
+// `next` id; consuming it here is what makes the campaign a campaign rather than three levels
+// in a folder. A full page load is deliberate (ponytail: the alternative is rebuilding world +
+// player + combat + UI in place and re-wiring every bus listener, to save ~1s on a transition
+// that happens 4 times a run) — it also guarantees no leaked pools or stale event pumps.
+// Flags ride along, so ?dbg=1 / ?seed= survive the hop. Unknown/absent `to` = campaign over:
+// stay on the card rather than dumping the player into the stub tube.
+bus.on('ui:continue', async (e) => {
+  if (!e?.to) return;
+  const mod = await import('./levels/index.js').catch(() => null);
+  if (!mod?.CAMPAIGN?.includes(e.to)) { console.info(`[boot] no level "${e.to}" yet — campaign ends here`); return; }
+  const q = new URLSearchParams(location.search);
+  q.set('lvl', e.to);
+  location.search = q.toString();
+});
+
 bus.on('player:death', () => { run.deaths++; run.respawnT = 2.0; });   // 2s of feed-drop, then back
 function updateRun(dt) {
   if (!run.done) run.t += dt;