diff --git a/src/loader.js b/src/loader.js
index 35dfc48..6dff584 100644
--- a/src/loader.js
+++ b/src/loader.js
@@ -1,3 +1,15 @@
-module.exports = function(content) {
-    return content;
+const { spawn } = require('child_process');
+
+module.exports = function(content, map, meta) {
+    const cb = this.async();
+    const expr = `(import sxml-serializer)(display (serialize-sxml ${content}))`;
+    const scheme = spawn('chicken-csi', ['-e', expr]);
+
+    scheme.stdout.on('data', data => {
+        cb(null, data, map, meta);
+    });
+
+    scheme.stderr.on('data', data => {
+        console.error(data);
+    });
 }