go awry

go awry (third-person singular simple present goes awry, present participle going awry, simple past went awry, past participle gone awry)

1. (intransitive) To become twisted, or turned to one side.
2. (intransitive) To depart from the correct course.
3. (intransitive) Of a situation, to fall apart or unravel; to fall into disorder; to hit the fan.

• the best laid plans of mice and men often go awry