Visual object tracking involves locating objects of interest and monitoring their movements throughout a video. To tackle this task, we have developed BUSCA, a plug-and-play module that can enhance any online Tracking-by-Detection system. BUSCA discovers those objects missed by the detector (e.g. due to occlusions and low visibility) and links them to their corresponding ID, reducing track fragmentation and false negatives. Our framework is fully online and does not override previous tracking associations, ensuring simple integration and minimal interference with baseline trackers.