In seven days, Bruno gets moved to Max, the prison nobody comes back from. So his brother Ken, an orangutan who plans everything, gets himself locked up in the same block to get him out.

At three in the morning the raccoon's bunk is empty, and the cell door is still locked. He isn't breaking out. He's going somewhere, and coming back. Ken follows the air shaft to find out where.

Day three. The warden sends for Ken. Nobody asks for B Block, and Ken's brother goes to Max in five days. Ken says he doesn't have a brother. The warden doesn't believe a word of it, and Ken finds out where the master keys are kept.

Ken finally sees how the raccoon gets out at night: through the vent, up the old air shaft, to a roof hatch that only opens from the outside. So who opens it for him?

Marco gets Ken ten minutes with his brother in the laundry. Bruno has seen something at night in the warden's wing. Bruno tells Ken to go home. Ken isn't leaving without him.

Bruno is in the hole, and Ken needs the roof. He has until the six o'clock count to get up there and back down, and the guards are already coming down the corridor.

The raccoon has read Ken's journal, and now he knows that Ken knew all along. He says the frame was the warden's orders. Can Ken still work with the one who put his brother here?

Transfer day. The van to Max comes at eleven, and the roof only opens at two. Ken's plan is dead unless he gets the warden's keys out of the third drawer today.

The warden opens his drawer and finds it empty. He can't report the keys stolen twice, so he waits. Tonight Ken has to get Bruno out of the hole before the van comes.

The season one finale. Ken and the raccoon go back further than anyone knew, all the way to the old zoo. Tonight is the only night, and not everyone is getting over the wall.