Rearrange the following pieces of text into a story:
He had a plan.
A tall, dark figure appeared in the shadows.
A secret mission.
A tall, dark figure appeared in the shadows. He had a plan. It was a secret mission.
Complete the following task based on the instruction and optional input provided.### Instruction:
Rearrange the following pieces of text into a story:

### Input:
He had a plan.
A tall, dark figure appeared in the shadows.
A secret mission.

### Output:
A tall, dark figure appeared in the shadows. He had a plan. It was a secret mission.