"The Best of Both"
When Bart is tasked by Helen Claiborne to clean his room, he rediscovers a vat of chemicals from a previous encounter with Inertia. Thinking it best not to leave it in his room, he takes it to Young Justice headquarters for safe-keeping. Too bad that most of Bart's good ideas always fall apart.
Note: Inertia is a disguise worn by Bart in this story.