It is wrong to ruin someone else's party.
Hank is working on a major project at work and needs help, while Steve is celebrating his birthday.
Hank wants to get a subordinate to help him.
Hank finds someone who is bored and orders him to come in.
Hank contacts Steve and orders him to come in or else be fired.
Steve enjoys his birthday party.
Steve is angry with Hank for ruining his birthday.