Milo ventures out of the fish tank alone, so Bea and Oscar follow him. The three best friends catch the eye of the pet store cat Wilfred, and Milo must put aside his differences with the others to save the day.

When Clamantha’s crush on Oscar begins to overwhelm him, he thinks his problems are solved when she develops a crush on his laptop, mistaking it for a fellow clam. When the battery starts to die, Clamantha is upset that her new boyfriend is ignoring her and Oscar must find a way to make things right.