diff --git a/contracts/main.fc b/contracts/main.fc
index 1857951..5011fa6 100644
--- a/contracts/main.fc
+++ b/contracts/main.fc
@@ -190,6 +190,7 @@ slice calculate_nft_item_address(int wc, cell state_init) {
     if (in_msg_body.slice_empty?()) { ;; bounce back empty messages
         throw(0xffff);
     }
+    int my_balance = pair_first(get_balance());
     ;; handle internal messages
     int op = in_msg_body.slice_empty?() ? 0 : in_msg_body~load_uint(32);
     slice cs = in_msg_full.begin_parse();
@@ -199,8 +200,15 @@ slice calculate_nft_item_address(int wc, cell state_init) {
         return ();
     }
     slice sender_address = cs~load_msg_addr();
+
+    cs~load_msg_addr(); ;; skip dst
+    cs~load_coins(); ;; skip value
+    cs~skip_bits(1); ;; skip extracurrency collection
+    cs~load_coins(); ;; skip ihr_fee
+    int fwd_fee = cs~load_coins(); ;; we use message fwd_fee for estimation of forward_payload c
     ;; Un-serialize all the data
     (cell content, cell item_code, int init?, int index, slice collection_address, slice owner_address, cell domain, cell auction, int last_fill_up_time) = load_data();
+
     ;; This means that we are initializing the new contract
     ;; The initialization message has this structure:
     ;; address initial_owner_address (for an auction)
@@ -235,6 +243,43 @@ slice calculate_nft_item_address(int wc, cell state_init) {
         return ();
     }
 
+    (slice max_bid_address, int max_bid_amount, int auction_end_time) = unpack_auction(auction);
+    int auction_complete = now() > auction_end_time;
+    int query_id = in_msg_body~load_uint(64);
+
+    if ((auction_complete) & (~ cell_null?(auction))) { ;; take domain after auction
+        int balance_without_msg = my_balance - msg_value;
+        int amount_to_send = (max_bid_amount > balance_without_msg - min_tons_for_storage()) ? (balance_without_msg - min_tons_for_storage()) : max_bid_amount;
+        if (amount_to_send > 0) {
+            send_msg(collection_address, amount_to_send, op::fill_up, query_id, null(), 2); ;; ignore errors
+            my_balance -= amount_to_send;
+        }
+        owner_address = max_bid_address;
+        auction = null();
+        store_data(content, item_code, index, collection_address, owner_address, domain, auction, last_fill_up_time);
+    }
+
+    if (op == op::new_nft()) {
+        throw_unless(401, equal_slices(sender_address, owner_address));
+        ;; TODO (this is like the most important part)
+        return ();
+    }
+    if (op == op::transfer()) {
+        throw_unless(401, equal_slices(sender_address, owner_address));
+        transfer_ownership(my_balance, content, item_code, index, collection_address, owner_address, sender_address, query_id, in_msg_body, fwd_fee, domain, auction);
+        return ();
+    }
+    if (op == op::edit_content()) { ;; owner can change content and dns records
+        throw_unless(410, equal_slices(sender_address, owner_address));
+        store_data(in_msg_body~load_ref(), item_code, index, collection_address, owner_address, domain, auction, now());
+        return ();
+    }
+
+    if (op == op::get_static_data()) {
+        send_msg(sender_address, 0, op::report_static_data(), query_id, begin_cell().store_uint(index, 256).store_slice(collection_address), 64); ;; carry all the remaining value of the inbound message
+        return ();
+    }
+    throw(0xffff);
 }
 
 ;;