It's been a normal time for Band since him and Fluttershy had "done it" and now it's the beginning of the mating season for Band's kind, but Fluttershy's going with Twilight on a mission.

Unicorns need to mate so they can feel relieved, or else they're tense and/or depressed through the whole season. He'll need help.

Image part of what fatal_worther made