Do Over

S1, E11: Carl bombs his and Jane’s history presentation so badly that Porter gives Carl a “do over” and magically sets time back by one hour. Carl nails the presentation the second time but barely has time to revel in it before he discovers Porter has mistakenly created a time loop. Carl has to keep giving the same presentation over and over until Porter can fix the problem. Meanwhile, Dr. Cassabi has left to deal with another Angel-in-Training crisis. Suddenly Dennis the Raccoon finds himself in charge.