Tamara and Senta find some handcuffs and legirons on a sofa......after she finds out how the handcuffs work, they want to try out, especially Senta (never before handcuffed). "I want to try out"
After cuffing each other, Tom is coming home from work and find the two girls helpless and cuffed. "Thats the right time for coming home" ;-)

So Tom add some chains, two ballgags, attached to the wall, Tamara topless, no chance to get the keys........thats the right after work present :-)