In “Retirement Plan,” written and directed by John Kelly, a cartoon protagonist draws up an initially mundane list of activities to fill his golden years. As the list grows, it becomes more expansive: not only will he finally catch up on e-mail; he “will write a devastating yet optimistic piece of poetry.” The film, produced by Julie Murnaghan and Andrew Freedman and featuring voice work by the actor Domhnall Gleeson, runs for less than eight minutes, but quickly snowballs in emotion and poignancy, sprinkled with laughs. “I’m in my mid-forties, time-poor, submerged in possibilities that compete for my time,” Kelly said. “Animating a comedy about all of these feelings felt like the best way to meet them head on.”